Merge b4787a2d21 into de9d08075e

- Added VU1 Clamping (Extra + Preserve Sign) to Ougon no Kaze (SLPM-65140, SLPM-66853, SLPM-61030) to fix the shading of the enemy's Stand in Chapter 11-2
- Changed "Jojo" romanization to "JoJo" (SLPM-66853, SLPS-25686)
- Changed "Kimyouna" to "Kimyou na" in Ougon no Kaze [Best Price] (SLPM-66853)

3rdparty/fmt/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.8...3.26)
+cmake_minimum_required(VERSION 3.8...3.28)
 
 # Fallback for using newer policies on CMake <3.12.
 if (${CMAKE_VERSION} VERSION_LESS 3.12)
@@ -36,6 +36,12 @@ function(enable_module target)
   endif ()
 endfunction()
 
+set(FMT_USE_CMAKE_MODULES FALSE)
+if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.28 AND
+    CMAKE_GENERATOR STREQUAL "Ninja")
+  set(FMT_USE_CMAKE_MODULES TRUE)
+endif ()
+
 # Adds a library compiled with C++20 module support.
 # `enabled` is a CMake variables that specifies if modules are enabled.
 # If modules are disabled `add_module_library` falls back to creating a
@@ -53,6 +59,7 @@ function(add_module_library name)
   if (NOT ${${AML_IF}})
     # Create a non-modular library.
     target_sources(${name} PRIVATE ${AML_FALLBACK})
+    set_target_properties(${name} PROPERTIES CXX_SCAN_FOR_MODULES OFF)
     return()
   endif ()
 
@@ -62,48 +69,55 @@ function(add_module_library name)
     target_compile_options(${name} PUBLIC -fmodules-ts)
   endif ()
 
-  # `std` is affected by CMake options and may be higher than C++20.
+  target_compile_definitions(${name} PRIVATE FMT_MODULE)
-  get_target_property(std ${name} CXX_STANDARD)
 
-  if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+  if (FMT_USE_CMAKE_MODULES)
-    set(pcms)
+    target_sources(${name} PUBLIC FILE_SET fmt TYPE CXX_MODULES
-    foreach (src ${sources})
+                   FILES ${sources})
-      get_filename_component(pcm ${src} NAME_WE)
+  else()
-      set(pcm ${pcm}.pcm)
+    # `std` is affected by CMake options and may be higher than C++20.
+    get_target_property(std ${name} CXX_STANDARD)
 
-      # Propagate -fmodule-file=*.pcm to targets that link with this library.
+    if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-      target_compile_options(
+      set(pcms)
-        ${name} PUBLIC -fmodule-file=${CMAKE_CURRENT_BINARY_DIR}/${pcm})
+      foreach (src ${sources})
+        get_filename_component(pcm ${src} NAME_WE)
+        set(pcm ${pcm}.pcm)
 
-      # Use an absolute path to prevent target_link_libraries prepending -l
+        # Propagate -fmodule-file=*.pcm to targets that link with this library.
-      # to it.
+        target_compile_options(
-      set(pcms ${pcms} ${CMAKE_CURRENT_BINARY_DIR}/${pcm})
+          ${name} PUBLIC -fmodule-file=${CMAKE_CURRENT_BINARY_DIR}/${pcm})
-      add_custom_command(
-        OUTPUT ${pcm}
-        COMMAND ${CMAKE_CXX_COMPILER}
-                -std=c++${std} -x c++-module --precompile -c
-                -o ${pcm} ${CMAKE_CURRENT_SOURCE_DIR}/${src}
-                "-I$<JOIN:$<TARGET_PROPERTY:${name},INCLUDE_DIRECTORIES>,;-I>"
-        # Required by the -I generator expression above.
-        COMMAND_EXPAND_LISTS
-        DEPENDS ${src})
-    endforeach ()
 
-    # Add .pcm files as sources to make sure they are built before the library.
+        # Use an absolute path to prevent target_link_libraries prepending -l
-    set(sources)
+        # to it.
-    foreach (pcm ${pcms})
+        set(pcms ${pcms} ${CMAKE_CURRENT_BINARY_DIR}/${pcm})
-      get_filename_component(pcm_we ${pcm} NAME_WE)
+        add_custom_command(
-      set(obj ${pcm_we}.o)
+          OUTPUT ${pcm}
-      # Use an absolute path to prevent target_link_libraries prepending -l.
+          COMMAND ${CMAKE_CXX_COMPILER}
-      set(sources ${sources} ${pcm} ${CMAKE_CURRENT_BINARY_DIR}/${obj})
+                  -std=c++${std} -x c++-module --precompile -c
-      add_custom_command(
+                  -o ${pcm} ${CMAKE_CURRENT_SOURCE_DIR}/${src}
-        OUTPUT ${obj}
+                  "-I$<JOIN:$<TARGET_PROPERTY:${name},INCLUDE_DIRECTORIES>,;-I>"
-        COMMAND ${CMAKE_CXX_COMPILER} $<TARGET_PROPERTY:${name},COMPILE_OPTIONS>
+          # Required by the -I generator expression above.
-                -c -o ${obj} ${pcm}
+          COMMAND_EXPAND_LISTS
-        DEPENDS ${pcm})
+          DEPENDS ${src})
-    endforeach ()
+      endforeach ()
-  endif ()
+
-  target_sources(${name} PRIVATE ${sources})
+      # Add .pcm files as sources to make sure they are built before the library.
+      set(sources)
+      foreach (pcm ${pcms})
+        get_filename_component(pcm_we ${pcm} NAME_WE)
+        set(obj ${pcm_we}.o)
+        # Use an absolute path to prevent target_link_libraries prepending -l.
+        set(sources ${sources} ${pcm} ${CMAKE_CURRENT_BINARY_DIR}/${obj})
+        add_custom_command(
+          OUTPUT ${obj}
+          COMMAND ${CMAKE_CXX_COMPILER} $<TARGET_PROPERTY:${name},COMPILE_OPTIONS>
+                  -c -o ${obj} ${pcm}
+          DEPENDS ${pcm})
+      endforeach ()
+    endif ()
+    target_sources(${name} PRIVATE ${sources})
+  endif()
 endfunction()
 
 include(CMakeParseArguments)
@@ -145,21 +159,33 @@ option(FMT_WERROR "Halt the compilation with an error on compiler warnings."
        OFF)
 
 # Options that control generation of various targets.
+option(FMT_DOC "Generate the doc target." ${FMT_MASTER_PROJECT})
 option(FMT_INSTALL "Generate the install target." ON)
+option(FMT_TEST "Generate the test target." ${FMT_MASTER_PROJECT})
 option(FMT_FUZZ "Generate the fuzz target." OFF)
-option(FMT_OS "Include core requiring OS (Windows/Posix) " ON)
+option(FMT_CUDA_TEST "Generate the cuda-test target." OFF)
+option(FMT_OS "Include OS-specific APIs." ON)
 option(FMT_MODULE "Build a module instead of a traditional library." OFF)
 option(FMT_SYSTEM_HEADERS "Expose headers with marking them as system." OFF)
+option(FMT_UNICODE "Enable Unicode support." ON)
 
+if (FMT_TEST AND FMT_MODULE)
+  # The tests require {fmt} to be compiled as traditional library
+  message(STATUS "Testing is incompatible with build mode 'module'.")
+endif ()
 set(FMT_SYSTEM_HEADERS_ATTRIBUTE "")
 if (FMT_SYSTEM_HEADERS)
   set(FMT_SYSTEM_HEADERS_ATTRIBUTE SYSTEM)
 endif ()
+if (CMAKE_SYSTEM_NAME STREQUAL "MSDOS")
+  set(FMT_TEST OFF)
+  message(STATUS "MSDOS is incompatible with gtest")
+endif ()
 
-# Get version from core.h
+# Get version from base.h
-file(READ include/fmt/core.h core_h)
+file(READ include/fmt/base.h base_h)
-if (NOT core_h MATCHES "FMT_VERSION ([0-9]+)([0-9][0-9])([0-9][0-9])")
+if (NOT base_h MATCHES "FMT_VERSION ([0-9]+)([0-9][0-9])([0-9][0-9])")
-  message(FATAL_ERROR "Cannot get FMT_VERSION from core.h.")
+  message(FATAL_ERROR "Cannot get FMT_VERSION from base.h.")
 endif ()
 # Use math to skip leading zeros if any.
 math(EXPR CPACK_PACKAGE_VERSION_MAJOR ${CMAKE_MATCH_1})
@@ -167,7 +193,7 @@ math(EXPR CPACK_PACKAGE_VERSION_MINOR ${CMAKE_MATCH_2})
 math(EXPR CPACK_PACKAGE_VERSION_PATCH ${CMAKE_MATCH_3})
 join(FMT_VERSION ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.
                  ${CPACK_PACKAGE_VERSION_PATCH})
-message(STATUS "Version: ${FMT_VERSION}")
+message(STATUS "{fmt} version: ${FMT_VERSION}")
 
 message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
 
@@ -214,7 +240,13 @@ if (CMAKE_CXX_COMPILER_ID MATCHES "GNU")
   endif ()
   if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.0)
       set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wshift-overflow=2
-          -Wnull-dereference -Wduplicated-cond)
+          -Wduplicated-cond)
+      # Workaround for GCC regression
+      # [12/13/14/15 regression] New (since gcc 12) false positive null-dereference in vector.resize
+      # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108860
+      if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 12.0)
+        set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wnull-dereference)
+      endif ()
   endif ()
   set(WERROR_FLAG -Werror)
 endif ()
@@ -263,13 +295,10 @@ function(add_headers VAR)
 endfunction()
 
 # Define the fmt library, its includes and the needed defines.
-add_headers(FMT_HEADERS args.h chrono.h color.h compile.h core.h format.h
+add_headers(FMT_HEADERS args.h base.h chrono.h color.h compile.h core.h format.h
                         format-inl.h os.h ostream.h printf.h ranges.h std.h
                         xchar.h)
 set(FMT_SOURCES src/format.cc)
-if (FMT_OS)
-  set(FMT_SOURCES ${FMT_SOURCES} src/os.cc)
-endif ()
 
 add_module_library(fmt src/fmt.cc FALLBACK
                    ${FMT_SOURCES} ${FMT_HEADERS} README.md ChangeLog.md
@@ -277,6 +306,10 @@ add_module_library(fmt src/fmt.cc FALLBACK
 add_library(fmt::fmt ALIAS fmt)
 if (FMT_MODULE)
   enable_module(fmt)
+elseif (FMT_OS)
+  target_sources(fmt PRIVATE src/os.cc)
+else()
+  target_compile_definitions(fmt PRIVATE FMT_OS=0)
 endif ()
 
 if (FMT_WERROR)
@@ -292,7 +325,7 @@ else ()
   message(WARNING "Feature cxx_std_11 is unknown for the CXX compiler")
 endif ()
 
-target_include_directories(fmt ${FMT_SYSTEM_HEADERS_ATTRIBUTE} PUBLIC
+target_include_directories(fmt ${FMT_SYSTEM_HEADERS_ATTRIBUTE} BEFORE PUBLIC
   $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
   $<INSTALL_INTERFACE:${FMT_INC_DIR}>)
 
@@ -328,11 +361,21 @@ endif ()
 add_library(fmt-header-only INTERFACE)
 add_library(fmt::fmt-header-only ALIAS fmt-header-only)
 
+if (NOT MSVC)
+  # Unicode is always supported on compilers other than MSVC.
+elseif (FMT_UNICODE)
+  # Unicode support requires compiling with /utf-8.
+  target_compile_options(fmt PUBLIC $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CXX_COMPILER_ID:MSVC>>:/utf-8>)
+  target_compile_options(fmt-header-only INTERFACE $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CXX_COMPILER_ID:MSVC>>:/utf-8>)
+else ()
+  target_compile_definitions(fmt PUBLIC FMT_UNICODE=0)
+endif ()
+
 target_compile_definitions(fmt-header-only INTERFACE FMT_HEADER_ONLY=1)
 target_compile_features(fmt-header-only INTERFACE cxx_std_11)
 
 target_include_directories(fmt-header-only
-  ${FMT_SYSTEM_HEADERS_ATTRIBUTE} INTERFACE
+  ${FMT_SYSTEM_HEADERS_ATTRIBUTE} BEFORE INTERFACE
   $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
   $<INSTALL_INTERFACE:${FMT_INC_DIR}>)
 
@@ -377,12 +420,20 @@ if (FMT_INSTALL)
 
   set(INSTALL_TARGETS fmt fmt-header-only)
 
+  set(INSTALL_FILE_SET)
+  if (FMT_USE_CMAKE_MODULES)
+    set(INSTALL_FILE_SET FILE_SET fmt DESTINATION "${FMT_INC_DIR}/fmt")
+  endif()
+
   # Install the library and headers.
-  install(TARGETS ${INSTALL_TARGETS} EXPORT ${targets_export_name}
+  install(TARGETS ${INSTALL_TARGETS}
+          COMPONENT fmt-core
+          EXPORT ${targets_export_name}
           LIBRARY DESTINATION ${FMT_LIB_DIR}
           ARCHIVE DESTINATION ${FMT_LIB_DIR}
           PUBLIC_HEADER DESTINATION "${FMT_INC_DIR}/fmt"
-          RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+          RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+          ${INSTALL_FILE_SET})
 
   # Use a namespace because CMake provides better diagnostics for namespaced
   # imported targets.
@@ -390,13 +441,61 @@ if (FMT_INSTALL)
          FILE ${PROJECT_BINARY_DIR}/${targets_export_name}.cmake)
 
   # Install version, config and target files.
-  install(
+  install(FILES ${project_config} ${version_config}
-    FILES ${project_config} ${version_config}
+          DESTINATION ${FMT_CMAKE_DIR}
-    DESTINATION ${FMT_CMAKE_DIR})
+          COMPONENT fmt-core)
   install(EXPORT ${targets_export_name} DESTINATION ${FMT_CMAKE_DIR}
-          NAMESPACE fmt::)
+          NAMESPACE fmt::
+          COMPONENT fmt-core)
 
-  install(FILES "${pkgconfig}" DESTINATION "${FMT_PKGCONFIG_DIR}")
+  install(FILES "${pkgconfig}" DESTINATION "${FMT_PKGCONFIG_DIR}"
+          COMPONENT fmt-core)
+endif ()
+
+function(add_doc_target)
+  find_program(DOXYGEN doxygen
+    PATHS "$ENV{ProgramFiles}/doxygen/bin"
+          "$ENV{ProgramFiles\(x86\)}/doxygen/bin")
+  if (NOT DOXYGEN)
+    message(STATUS "Target 'doc' disabled because doxygen not found")
+    return ()
+  endif ()
+
+  find_program(MKDOCS mkdocs)
+  if (NOT MKDOCS)
+    message(STATUS "Target 'doc' disabled because mkdocs not found")
+    return ()
+  endif ()
+
+  set(sources )
+  foreach (source api.md index.md syntax.md get-started.md fmt.css fmt.js)
+    set(sources ${sources} doc/${source})
+  endforeach()
+
+  add_custom_target(
+    doc
+    COMMAND
+      ${CMAKE_COMMAND}
+        -E env PYTHONPATH=${CMAKE_CURRENT_SOURCE_DIR}/support/python
+        ${MKDOCS} build -f ${CMAKE_CURRENT_SOURCE_DIR}/support/mkdocs.yml
+        # MkDocs requires the site dir to be outside of the doc dir.
+                        --site-dir ${CMAKE_CURRENT_BINARY_DIR}/doc-html
+                        --no-directory-urls
+    SOURCES ${sources})
+
+  include(GNUInstallDirs)
+  install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/doc-html/
+          DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/doc/fmt
+          COMPONENT fmt-doc OPTIONAL)
+endfunction()
+
+if (FMT_DOC)
+  add_doc_target()
+endif ()
+
+if (FMT_TEST)
+  enable_testing()
+  add_subdirectory(test)
 endif ()
 
 # Control fuzzing independent of the unit tests.
@@ -421,8 +520,7 @@ if (FMT_MASTER_PROJECT AND EXISTS ${gitignore})
     string(REPLACE "*" ".*" line "${line}")
     set(ignored_files ${ignored_files} "${line}$" "${line}/")
   endforeach ()
-  set(ignored_files ${ignored_files}
+  set(ignored_files ${ignored_files} /.git /build/doxyxml .vagrant)
-    /.git /breathe /format-benchmark sphinx/ .buildinfo .doctrees)
 
   set(CPACK_SOURCE_GENERATOR ZIP)
   set(CPACK_SOURCE_IGNORE_FILES ${ignored_files})

3rdparty/fmt/README.md

@@ -20,16 +20,16 @@ that help victims of the war in Ukraine: <https://www.stopputin.net/>.
 Q&A: ask questions on [StackOverflow with the tag
 fmt](https://stackoverflow.com/questions/tagged/fmt).
 
-Try {fmt} in [Compiler Explorer](https://godbolt.org/z/Eq5763).
+Try {fmt} in [Compiler Explorer](https://godbolt.org/z/8Mx1EW73v).
 
 # Features
 
-- Simple [format API](https://fmt.dev/latest/api.html) with positional
+- Simple [format API](https://fmt.dev/latest/api/) with positional
   arguments for localization
 - Implementation of [C++20
   std::format](https://en.cppreference.com/w/cpp/utility/format) and
   [C++23 std::print](https://en.cppreference.com/w/cpp/io/print)
-- [Format string syntax](https://fmt.dev/latest/syntax.html) similar
+- [Format string syntax](https://fmt.dev/latest/syntax/) similar
   to Python\'s
   [format](https://docs.python.org/3/library/stdtypes.html#str.format)
 - Fast IEEE 754 floating-point formatter with correct rounding,
@@ -37,10 +37,10 @@ Try {fmt} in [Compiler Explorer](https://godbolt.org/z/Eq5763).
   [Dragonbox](https://github.com/jk-jeon/dragonbox) algorithm
 - Portable Unicode support
 - Safe [printf
-  implementation](https://fmt.dev/latest/api.html#printf-formatting)
+  implementation](https://fmt.dev/latest/api/#printf-formatting)
   including the POSIX extension for positional arguments
 - Extensibility: [support for user-defined
-  types](https://fmt.dev/latest/api.html#formatting-user-defined-types)
+  types](https://fmt.dev/latest/api/#formatting-user-defined-types)
 - High performance: faster than common standard library
   implementations of `(s)printf`, iostreams, `to_string` and
   `to_chars`, see [Speed tests](#speed-tests) and [Converting a
@@ -58,8 +58,8 @@ Try {fmt} in [Compiler Explorer](https://godbolt.org/z/Eq5763).
   buffer overflow errors
 - Ease of use: small self-contained code base, no external
   dependencies, permissive MIT
-  [license](https://github.com/fmtlib/fmt/blob/master/LICENSE.rst)
+  [license](https://github.com/fmtlib/fmt/blob/master/LICENSE)
-- [Portability](https://fmt.dev/latest/index.html#portability) with
+- [Portability](https://fmt.dev/latest/#portability) with
   consistent output across platforms and support for older compilers
 - Clean warning-free codebase even on high warning levels such as
   `-Wall -Wextra -pedantic`
@@ -203,43 +203,38 @@ and [ryu](https://github.com/ulfjack/ryu):
 
 ## Compile time and code bloat
 
-The script
+The script [bloat-test.py][test] from [format-benchmark][bench] tests compile
-[bloat-test.py](https://github.com/fmtlib/format-benchmark/blob/master/bloat-test.py)
+time and code bloat for nontrivial projects. It generates 100 translation units
-from [format-benchmark](https://github.com/fmtlib/format-benchmark)
+and uses `printf()` or its alternative five times in each to simulate a
-tests compile time and code bloat for nontrivial projects. It generates
+medium-sized project. The resulting executable size and compile time (Apple
-100 translation units and uses `printf()` or its alternative five times
+clang version 15.0.0 (clang-1500.1.0.2.5), macOS Sonoma, best of three) is shown
-in each to simulate a medium-sized project. The resulting executable
+in the following tables.
-size and compile time (Apple LLVM version 8.1.0 (clang-802.0.42), macOS
+
-Sierra, best of three) is shown in the following tables.
+[test]: https://github.com/fmtlib/format-benchmark/blob/master/bloat-test.py
+[bench]: https://github.com/fmtlib/format-benchmark
 
 **Optimized build (-O3)**
 
 | Method        | Compile Time, s | Executable size, KiB | Stripped size, KiB |
 |---------------|-----------------|----------------------|--------------------|
-| printf        |   2.6           |   29                 |   26               |
+| printf        |             1.6 |                   54 |                 50 |
-| printf+string |   16.4          |   29                 |   26               |
+| IOStreams     |            25.9 |                   98 |                 84 |
-| iostreams     |   31.1          |   59                 |   55               |
+| fmt 83652df   |             4.8 |                   54 |                 50 |
-| {fmt}         |   19.0          |   37                 |   34               |
+| tinyformat    |            29.1 |                  161 |                136 |
-| Boost Format  |   91.9          |   226                |   203              |
+| Boost Format  |            55.0 |                  530 |                317 |
-| Folly Format  |   115.7         |   101                |   88               |
 
-As you can see, {fmt} has 60% less overhead in terms of resulting binary
+{fmt} is fast to compile and is comparable to `printf` in terms of per-call
-code size compared to iostreams and comes pretty close to `printf`.
+binary size (within a rounding error on this system).
-Boost Format and Folly Format have the largest overheads.
-
-`printf+string` is the same as `printf` but with an extra `<string>`
-include to measure the overhead of the latter.
 
 **Non-optimized build**
 
 | Method        | Compile Time, s | Executable size, KiB | Stripped size, KiB |
 |---------------|-----------------|----------------------|--------------------|
-| printf        |   2.2           |   33                 |   30               |
+| printf        |             1.4 |                   54 |                 50 |
-| printf+string |   16.0          |   33                 |   30               |
+| IOStreams     |            23.4 |                   92 |                 68 |
-| iostreams     |   28.3          |   56                 |   52               |
+| {fmt} 83652df |             4.4 |                   89 |                 85 |
-| {fmt}         |   18.2          |   59                 |   50               |
+| tinyformat    |            24.5 |                  204 |                161 |
-| Boost Format  |   54.1          |   365                |   303              |
+| Boost Format  |            36.4 |                  831 |                462 |
-| Folly Format  |   79.9          |   445                |   430              |
 
 `libc`, `lib(std)c++`, and `libfmt` are all linked as shared libraries
 to compare formatting function overhead only. Boost Format is a
@@ -248,7 +243,7 @@ header-only library so it doesn\'t provide any linkage options.
 ## Running the tests
 
 Please refer to [Building the
-library](https://fmt.dev/latest/usage.html#building-the-library) for
+library](https://fmt.dev/latest/get-started/#building-from-source) for
 instructions on how to build the library and run the unit tests.
 
 Benchmarks reside in a separate repository,
@@ -270,8 +265,7 @@ or the bloat test:
 
 # Migrating code
 
-[clang-tidy](https://clang.llvm.org/extra/clang-tidy/) v17 (not yet
+[clang-tidy](https://clang.llvm.org/extra/clang-tidy/) v18 provides the
-released) provides the
 [modernize-use-std-print](https://clang.llvm.org/extra/clang-tidy/checks/modernize/use-std-print.html)
 check that is capable of converting occurrences of `printf` and
 `fprintf` to `fmt::print` if configured to do so. (By default it
@@ -297,13 +291,14 @@ converts to `std::print`.)
 - [ccache](https://ccache.dev/): a compiler cache
 - [ClickHouse](https://github.com/ClickHouse/ClickHouse): an
   analytical database management system
+- [ContextVision](https://www.contextvision.com/): medical imaging software
 - [Contour](https://github.com/contour-terminal/contour/): a modern
   terminal emulator
 - [CUAUV](https://cuauv.org/): Cornell University\'s autonomous
   underwater vehicle
 - [Drake](https://drake.mit.edu/): a planning, control, and analysis
   toolbox for nonlinear dynamical systems (MIT)
-- [Envoy](https://lyft.github.io/envoy/): C++ L7 proxy and
+- [Envoy](https://github.com/envoyproxy/envoy): C++ L7 proxy and
   communication bus (Lyft)
 - [FiveM](https://fivem.net/): a modification framework for GTA V
 - [fmtlog](https://github.com/MengRao/fmtlog): a performant
@@ -343,7 +338,7 @@ converts to `std::print`.)
 - [Quill](https://github.com/odygrd/quill): asynchronous low-latency
   logging library
 - [QKW](https://github.com/ravijanjam/qkw): generalizing aliasing to
-  simplify navigation, and executing complex multi-line terminal
+  simplify navigation, and execute complex multi-line terminal
   command sequences
 - [redis-cerberus](https://github.com/HunanTV/redis-cerberus): a Redis
   cluster proxy
@@ -432,7 +427,7 @@ code bloat issues (see [Benchmarks](#benchmarks)).
 
 ## FastFormat
 
-This is an interesting library that is fast, safe, and has positional
+This is an interesting library that is fast, safe and has positional
 arguments. However, it has significant limitations, citing its author:
 
 > Three features that have no hope of being accommodated within the
@@ -442,8 +437,8 @@ arguments. However, it has significant limitations, citing its author:
 > - Octal/hexadecimal encoding
 > - Runtime width/alignment specification
 
-It is also quite big and has a heavy dependency, STLSoft, which might be
+It is also quite big and has a heavy dependency, on STLSoft, which might be
-too restrictive for using it in some projects.
+too restrictive for use in some projects.
 
 ## Boost Spirit.Karma
 
@@ -462,7 +457,7 @@ second](http://www.zverovich.net/2020/06/13/fast-int-to-string-revisited.html).
 
 # Documentation License
 
-The [Format String Syntax](https://fmt.dev/latest/syntax.html) section
+The [Format String Syntax](https://fmt.dev/latest/syntax/) section
 in the documentation is based on the one from Python [string module
 documentation](https://docs.python.org/3/library/string.html#module-string).
 For this reason, the documentation is distributed under the Python
@@ -486,5 +481,5 @@ To report a security issue, please disclose it at [security
 advisory](https://github.com/fmtlib/fmt/security/advisories/new).
 
 This project is maintained by a team of volunteers on a
-reasonable-effort basis. As such, please give us at least 90 days to
+reasonable-effort basis. As such, please give us at least *90* days to
 work on a fix before public exposure.

3rdparty/fmt/include/fmt/args.h

@@ -8,14 +8,15 @@
 #ifndef FMT_ARGS_H_
 #define FMT_ARGS_H_
 
-#include <functional>  // std::reference_wrapper
+#ifndef FMT_MODULE
-#include <memory>      // std::unique_ptr
+#  include <functional>  // std::reference_wrapper
-#include <vector>
+#  include <memory>      // std::unique_ptr
+#  include <vector>
+#endif
 
-#include "core.h"
+#include "format.h"  // std_string_view
 
 FMT_BEGIN_NAMESPACE
-
 namespace detail {
 
 template <typename T> struct is_reference_wrapper : std::false_type {};
@@ -28,15 +29,18 @@ auto unwrap(const std::reference_wrapper<T>& v) -> const T& {
   return static_cast<const T&>(v);
 }
 
-class dynamic_arg_list {
+// node is defined outside dynamic_arg_list to workaround a C2504 bug in MSVC
-  // Workaround for clang's -Wweak-vtables. Unlike for regular classes, for
+// 2022 (v17.10.0).
-  // templates it doesn't complain about inability to deduce single translation
+//
-  // unit for placing vtable. So storage_node_base is made a fake template.
+// Workaround for clang's -Wweak-vtables. Unlike for regular classes, for
-  template <typename = void> struct node {
+// templates it doesn't complain about inability to deduce single translation
-    virtual ~node() = default;
+// unit for placing vtable. So node is made a fake template.
-    std::unique_ptr<node<>> next;
+template <typename = void> struct node {
-  };
+  virtual ~node() = default;
+  std::unique_ptr<node<>> next;
+};
 
+class dynamic_arg_list {
   template <typename T> struct typed_node : node<> {
     T value;
 
@@ -62,28 +66,18 @@ class dynamic_arg_list {
 }  // namespace detail
 
 /**
-  \rst
+ * A dynamic list of formatting arguments with storage.
-  A dynamic version of `fmt::format_arg_store`.
+ *
-  It's equipped with a storage to potentially temporary objects which lifetimes
+ * It can be implicitly converted into `fmt::basic_format_args` for passing
-  could be shorter than the format arguments object.
+ * into type-erased formatting functions such as `fmt::vformat`.
-
-  It can be implicitly converted into `~fmt::basic_format_args` for passing
-  into type-erased formatting functions such as `~fmt::vformat`.
-  \endrst
  */
-template <typename Context>
+template <typename Context> class dynamic_format_arg_store {
-class dynamic_format_arg_store
-#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
-    // Workaround a GCC template argument substitution bug.
-    : public basic_format_args<Context>
-#endif
-{
  private:
   using char_type = typename Context::char_type;
 
   template <typename T> struct need_copy {
     static constexpr detail::type mapped_type =
-        detail::mapped_type_constant<T, Context>::value;
+        detail::mapped_type_constant<T, char_type>::value;
 
     enum {
       value = !(detail::is_reference_wrapper<T>::value ||
@@ -96,7 +90,7 @@ class dynamic_format_arg_store
   };
 
   template <typename T>
-  using stored_type = conditional_t<
+  using stored_t = conditional_t<
       std::is_convertible<T, std::basic_string<char_type>>::value &&
           !detail::is_reference_wrapper<T>::value,
       std::basic_string<char_type>, T>;
@@ -111,80 +105,72 @@ class dynamic_format_arg_store
 
   friend class basic_format_args<Context>;
 
-  auto get_types() const -> unsigned long long {
-    return detail::is_unpacked_bit | data_.size() |
-           (named_info_.empty()
-                ? 0ULL
-                : static_cast<unsigned long long>(detail::has_named_args_bit));
-  }
-
   auto data() const -> const basic_format_arg<Context>* {
     return named_info_.empty() ? data_.data() : data_.data() + 1;
   }
 
   template <typename T> void emplace_arg(const T& arg) {
-    data_.emplace_back(detail::make_arg<Context>(arg));
+    data_.emplace_back(arg);
   }
 
   template <typename T>
   void emplace_arg(const detail::named_arg<char_type, T>& arg) {
-    if (named_info_.empty()) {
+    if (named_info_.empty())
-      constexpr const detail::named_arg_info<char_type>* zero_ptr{nullptr};
+      data_.insert(data_.begin(), basic_format_arg<Context>(nullptr, 0));
-      data_.insert(data_.begin(), {zero_ptr, 0});
+    data_.emplace_back(detail::unwrap(arg.value));
-    }
-    data_.emplace_back(detail::make_arg<Context>(detail::unwrap(arg.value)));
     auto pop_one = [](std::vector<basic_format_arg<Context>>* data) {
       data->pop_back();
     };
     std::unique_ptr<std::vector<basic_format_arg<Context>>, decltype(pop_one)>
         guard{&data_, pop_one};
     named_info_.push_back({arg.name, static_cast<int>(data_.size() - 2u)});
-    data_[0].value_.named_args = {named_info_.data(), named_info_.size()};
+    data_[0] = {named_info_.data(), named_info_.size()};
     guard.release();
   }
 
  public:
   constexpr dynamic_format_arg_store() = default;
 
+  operator basic_format_args<Context>() const {
+    return basic_format_args<Context>(data(), static_cast<int>(data_.size()),
+                                      !named_info_.empty());
+  }
+
   /**
-    \rst
+   * Adds an argument into the dynamic store for later passing to a formatting
-    Adds an argument into the dynamic store for later passing to a formatting
+   * function.
-    function.
+   *
-
+   * Note that custom types and string types (but not string views) are copied
-    Note that custom types and string types (but not string views) are copied
+   * into the store dynamically allocating memory if necessary.
-    into the store dynamically allocating memory if necessary.
+   *
-
+   * **Example**:
-    **Example**::
+   *
-
+   *     fmt::dynamic_format_arg_store<fmt::format_context> store;
-      fmt::dynamic_format_arg_store<fmt::format_context> store;
+   *     store.push_back(42);
-      store.push_back(42);
+   *     store.push_back("abc");
-      store.push_back("abc");
+   *     store.push_back(1.5f);
-      store.push_back(1.5f);
+   *     std::string result = fmt::vformat("{} and {} and {}", store);
-      std::string result = fmt::vformat("{} and {} and {}", store);
+   */
-    \endrst
-  */
   template <typename T> void push_back(const T& arg) {
     if (detail::const_check(need_copy<T>::value))
-      emplace_arg(dynamic_args_.push<stored_type<T>>(arg));
+      emplace_arg(dynamic_args_.push<stored_t<T>>(arg));
     else
       emplace_arg(detail::unwrap(arg));
   }
 
   /**
-    \rst
+   * Adds a reference to the argument into the dynamic store for later passing
-    Adds a reference to the argument into the dynamic store for later passing to
+   * to a formatting function.
-    a formatting function.
+   *
-
+   * **Example**:
-    **Example**::
+   *
-
+   *     fmt::dynamic_format_arg_store<fmt::format_context> store;
-      fmt::dynamic_format_arg_store<fmt::format_context> store;
+   *     char band[] = "Rolling Stones";
-      char band[] = "Rolling Stones";
+   *     store.push_back(std::cref(band));
-      store.push_back(std::cref(band));
+   *     band[9] = 'c'; // Changing str affects the output.
-      band[9] = 'c'; // Changing str affects the output.
+   *     std::string result = fmt::vformat("{}", store);
-      std::string result = fmt::vformat("{}", store);
+   *     // result == "Rolling Scones"
-      // result == "Rolling Scones"
+   */
-    \endrst
-  */
   template <typename T> void push_back(std::reference_wrapper<T> arg) {
     static_assert(
         need_copy<T>::value,
@@ -193,41 +179,40 @@ class dynamic_format_arg_store
   }
 
   /**
-    Adds named argument into the dynamic store for later passing to a formatting
+   * Adds named argument into the dynamic store for later passing to a
-    function. ``std::reference_wrapper`` is supported to avoid copying of the
+   * formatting function. `std::reference_wrapper` is supported to avoid
-    argument. The name is always copied into the store.
+   * copying of the argument. The name is always copied into the store.
-  */
+   */
   template <typename T>
   void push_back(const detail::named_arg<char_type, T>& arg) {
     const char_type* arg_name =
         dynamic_args_.push<std::basic_string<char_type>>(arg.name).c_str();
     if (detail::const_check(need_copy<T>::value)) {
       emplace_arg(
-          fmt::arg(arg_name, dynamic_args_.push<stored_type<T>>(arg.value)));
+          fmt::arg(arg_name, dynamic_args_.push<stored_t<T>>(arg.value)));
     } else {
       emplace_arg(fmt::arg(arg_name, arg.value));
     }
   }
 
-  /** Erase all elements from the store */
+  /// Erase all elements from the store.
   void clear() {
     data_.clear();
     named_info_.clear();
-    dynamic_args_ = detail::dynamic_arg_list();
+    dynamic_args_ = {};
   }
 
-  /**
+  /// Reserves space to store at least `new_cap` arguments including
-    \rst
+  /// `new_cap_named` named arguments.
-    Reserves space to store at least *new_cap* arguments including
-    *new_cap_named* named arguments.
-    \endrst
-  */
   void reserve(size_t new_cap, size_t new_cap_named) {
     FMT_ASSERT(new_cap >= new_cap_named,
-               "Set of arguments includes set of named arguments");
+               "set of arguments includes set of named arguments");
     data_.reserve(new_cap);
     named_info_.reserve(new_cap_named);
   }
+
+  /// Returns the number of elements in the store.
+  size_t size() const noexcept { return data_.size(); }
 };
 
 FMT_END_NAMESPACE

3rdparty/fmt/include/fmt/color.h

@@ -227,7 +227,7 @@ struct color_type {
 };
 }  // namespace detail
 
-/** A text style consisting of foreground and background colors and emphasis. */
+/// A text style consisting of foreground and background colors and emphasis.
 class text_style {
  public:
   FMT_CONSTEXPR text_style(emphasis em = emphasis()) noexcept
@@ -239,7 +239,7 @@ class text_style {
       foreground_color = rhs.foreground_color;
     } else if (rhs.set_foreground_color) {
       if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
-        FMT_THROW(format_error("can't OR a terminal color"));
+        report_error("can't OR a terminal color");
       foreground_color.value.rgb_color |= rhs.foreground_color.value.rgb_color;
     }
 
@@ -248,7 +248,7 @@ class text_style {
       background_color = rhs.background_color;
     } else if (rhs.set_background_color) {
       if (!background_color.is_rgb || !rhs.background_color.is_rgb)
-        FMT_THROW(format_error("can't OR a terminal color"));
+        report_error("can't OR a terminal color");
       background_color.value.rgb_color |= rhs.background_color.value.rgb_color;
     }
 
@@ -310,13 +310,13 @@ class text_style {
   emphasis ems;
 };
 
-/** Creates a text style from the foreground (text) color. */
+/// Creates a text style from the foreground (text) color.
 FMT_CONSTEXPR inline auto fg(detail::color_type foreground) noexcept
     -> text_style {
   return text_style(true, foreground);
 }
 
-/** Creates a text style from the background color. */
+/// Creates a text style from the background color.
 FMT_CONSTEXPR inline auto bg(detail::color_type background) noexcept
     -> text_style {
   return text_style(false, background);
@@ -330,7 +330,7 @@ FMT_CONSTEXPR inline auto operator|(emphasis lhs, emphasis rhs) noexcept
 namespace detail {
 
 template <typename Char> struct ansi_color_escape {
-  FMT_CONSTEXPR ansi_color_escape(detail::color_type text_color,
+  FMT_CONSTEXPR ansi_color_escape(color_type text_color,
                                   const char* esc) noexcept {
     // If we have a terminal color, we need to output another escape code
     // sequence.
@@ -390,8 +390,8 @@ template <typename Char> struct ansi_color_escape {
   FMT_CONSTEXPR operator const Char*() const noexcept { return buffer; }
 
   FMT_CONSTEXPR auto begin() const noexcept -> const Char* { return buffer; }
-  FMT_CONSTEXPR_CHAR_TRAITS auto end() const noexcept -> const Char* {
+  FMT_CONSTEXPR20 auto end() const noexcept -> const Char* {
-    return buffer + std::char_traits<Char>::length(buffer);
+    return buffer + basic_string_view<Char>(buffer).size();
   }
 
  private:
@@ -412,13 +412,13 @@ template <typename Char> struct ansi_color_escape {
 };
 
 template <typename Char>
-FMT_CONSTEXPR auto make_foreground_color(detail::color_type foreground) noexcept
+FMT_CONSTEXPR auto make_foreground_color(color_type foreground) noexcept
     -> ansi_color_escape<Char> {
   return ansi_color_escape<Char>(foreground, "\x1b[38;2;");
 }
 
 template <typename Char>
-FMT_CONSTEXPR auto make_background_color(detail::color_type background) noexcept
+FMT_CONSTEXPR auto make_background_color(color_type background) noexcept
     -> ansi_color_escape<Char> {
   return ansi_color_escape<Char>(background, "\x1b[48;2;");
 }
@@ -434,7 +434,7 @@ template <typename Char> inline void reset_color(buffer<Char>& buffer) {
   buffer.append(reset_color.begin(), reset_color.end());
 }
 
-template <typename T> struct styled_arg : detail::view {
+template <typename T> struct styled_arg : view {
   const T& value;
   text_style style;
   styled_arg(const T& v, text_style s) : value(v), style(s) {}
@@ -442,145 +442,115 @@ template <typename T> struct styled_arg : detail::view {
 
 template <typename Char>
 void vformat_to(buffer<Char>& buf, const text_style& ts,
-                basic_string_view<Char> format_str,
+                basic_string_view<Char> fmt,
-                basic_format_args<buffer_context<type_identity_t<Char>>> args) {
+                basic_format_args<buffered_context<Char>> args) {
   bool has_style = false;
   if (ts.has_emphasis()) {
     has_style = true;
-    auto emphasis = detail::make_emphasis<Char>(ts.get_emphasis());
+    auto emphasis = make_emphasis<Char>(ts.get_emphasis());
     buf.append(emphasis.begin(), emphasis.end());
   }
   if (ts.has_foreground()) {
     has_style = true;
-    auto foreground = detail::make_foreground_color<Char>(ts.get_foreground());
+    auto foreground = make_foreground_color<Char>(ts.get_foreground());
     buf.append(foreground.begin(), foreground.end());
   }
   if (ts.has_background()) {
     has_style = true;
-    auto background = detail::make_background_color<Char>(ts.get_background());
+    auto background = make_background_color<Char>(ts.get_background());
     buf.append(background.begin(), background.end());
   }
-  detail::vformat_to(buf, format_str, args, {});
+  vformat_to(buf, fmt, args);
-  if (has_style) detail::reset_color<Char>(buf);
+  if (has_style) reset_color<Char>(buf);
 }
-
 }  // namespace detail
 
-inline void vprint(std::FILE* f, const text_style& ts, string_view fmt,
+inline void vprint(FILE* f, const text_style& ts, string_view fmt,
                    format_args args) {
-  // Legacy wide streams are not supported.
   auto buf = memory_buffer();
   detail::vformat_to(buf, ts, fmt, args);
-  if (detail::is_utf8()) {
+  print(f, FMT_STRING("{}"), string_view(buf.begin(), buf.size()));
-    detail::print(f, string_view(buf.begin(), buf.size()));
-    return;
-  }
-  buf.push_back('\0');
-  int result = std::fputs(buf.data(), f);
-  if (result < 0)
-    FMT_THROW(system_error(errno, FMT_STRING("cannot write to file")));
 }
 
 /**
-  \rst
+ * Formats a string and prints it to the specified file stream using ANSI
-  Formats a string and prints it to the specified file stream using ANSI
+ * escape sequences to specify text formatting.
-  escape sequences to specify text formatting.
+ *
-
+ * **Example**:
-  **Example**::
+ *
-
+ *     fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
-    fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
+ *                "Elapsed time: {0:.2f} seconds", 1.23);
-               "Elapsed time: {0:.2f} seconds", 1.23);
-  \endrst
  */
-template <typename S, typename... Args,
+template <typename... T>
-          FMT_ENABLE_IF(detail::is_string<S>::value)>
+void print(FILE* f, const text_style& ts, format_string<T...> fmt,
-void print(std::FILE* f, const text_style& ts, const S& format_str,
+           T&&... args) {
-           const Args&... args) {
+  vprint(f, ts, fmt.str, vargs<T...>{{args...}});
-  vprint(f, ts, format_str,
-         fmt::make_format_args<buffer_context<char_t<S>>>(args...));
 }
 
 /**
-  \rst
+ * Formats a string and prints it to stdout using ANSI escape sequences to
-  Formats a string and prints it to stdout using ANSI escape sequences to
+ * specify text formatting.
-  specify text formatting.
+ *
-
+ * **Example**:
-  **Example**::
+ *
-
+ *     fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
-    fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
+ *                "Elapsed time: {0:.2f} seconds", 1.23);
-               "Elapsed time: {0:.2f} seconds", 1.23);
-  \endrst
  */
-template <typename S, typename... Args,
+template <typename... T>
-          FMT_ENABLE_IF(detail::is_string<S>::value)>
+void print(const text_style& ts, format_string<T...> fmt, T&&... args) {
-void print(const text_style& ts, const S& format_str, const Args&... args) {
+  return print(stdout, ts, fmt, std::forward<T>(args)...);
-  return print(stdout, ts, format_str, args...);
 }
 
-template <typename S, typename Char = char_t<S>>
+inline auto vformat(const text_style& ts, string_view fmt, format_args args)
-inline auto vformat(
+    -> std::string {
-    const text_style& ts, const S& format_str,
+  auto buf = memory_buffer();
-    basic_format_args<buffer_context<type_identity_t<Char>>> args)
+  detail::vformat_to(buf, ts, fmt, args);
-    -> std::basic_string<Char> {
-  basic_memory_buffer<Char> buf;
-  detail::vformat_to(buf, ts, detail::to_string_view(format_str), args);
   return fmt::to_string(buf);
 }
 
 /**
-  \rst
+ * Formats arguments and returns the result as a string using ANSI escape
-  Formats arguments and returns the result as a string using ANSI
+ * sequences to specify text formatting.
-  escape sequences to specify text formatting.
+ *
-
+ * **Example**:
-  **Example**::
+ *
-
+ * ```
-    #include <fmt/color.h>
+ * #include <fmt/color.h>
-    std::string message = fmt::format(fmt::emphasis::bold | fg(fmt::color::red),
+ * std::string message = fmt::format(fmt::emphasis::bold | fg(fmt::color::red),
-                                      "The answer is {}", 42);
+ *                                   "The answer is {}", 42);
-  \endrst
+ * ```
-*/
+ */
-template <typename S, typename... Args, typename Char = char_t<S>>
+template <typename... T>
-inline auto format(const text_style& ts, const S& format_str,
+inline auto format(const text_style& ts, format_string<T...> fmt, T&&... args)
-                   const Args&... args) -> std::basic_string<Char> {
+    -> std::string {
-  return fmt::vformat(ts, detail::to_string_view(format_str),
+  return fmt::vformat(ts, fmt.str, vargs<T...>{{args...}});
-                      fmt::make_format_args<buffer_context<Char>>(args...));
 }
 
-/**
+/// Formats a string with the given text_style and writes the output to `out`.
-  Formats a string with the given text_style and writes the output to ``out``.
+template <typename OutputIt,
- */
+          FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
-template <typename OutputIt, typename Char,
+auto vformat_to(OutputIt out, const text_style& ts, string_view fmt,
-          FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value)>
+                format_args args) -> OutputIt {
-auto vformat_to(OutputIt out, const text_style& ts,
+  auto&& buf = detail::get_buffer<char>(out);
-                basic_string_view<Char> format_str,
+  detail::vformat_to(buf, ts, fmt, args);
-                basic_format_args<buffer_context<type_identity_t<Char>>> args)
-    -> OutputIt {
-  auto&& buf = detail::get_buffer<Char>(out);
-  detail::vformat_to(buf, ts, format_str, args);
   return detail::get_iterator(buf, out);
 }
 
 /**
-  \rst
+ * Formats arguments with the given text style, writes the result to the output
-  Formats arguments with the given text_style, writes the result to the output
+ * iterator `out` and returns the iterator past the end of the output range.
-  iterator ``out`` and returns the iterator past the end of the output range.
+ *
-
+ * **Example**:
-  **Example**::
+ *
-
+ *     std::vector<char> out;
-    std::vector<char> out;
+ *     fmt::format_to(std::back_inserter(out),
-    fmt::format_to(std::back_inserter(out),
+ *                    fmt::emphasis::bold | fg(fmt::color::red), "{}", 42);
-                   fmt::emphasis::bold | fg(fmt::color::red), "{}", 42);
+ */
-  \endrst
+template <typename OutputIt, typename... T,
-*/
+          FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
-template <
+inline auto format_to(OutputIt out, const text_style& ts,
-    typename OutputIt, typename S, typename... Args,
+                      format_string<T...> fmt, T&&... args) -> OutputIt {
-    bool enable = detail::is_output_iterator<OutputIt, char_t<S>>::value &&
+  return vformat_to(out, ts, fmt.str, vargs<T...>{{args...}});
-                  detail::is_string<S>::value>
-inline auto format_to(OutputIt out, const text_style& ts, const S& format_str,
-                      Args&&... args) ->
-    typename std::enable_if<enable, OutputIt>::type {
-  return vformat_to(out, ts, detail::to_string_view(format_str),
-                    fmt::make_format_args<buffer_context<char_t<S>>>(args...));
 }
 
 template <typename T, typename Char>
@@ -589,47 +559,44 @@ struct formatter<detail::styled_arg<T>, Char> : formatter<T, Char> {
   auto format(const detail::styled_arg<T>& arg, FormatContext& ctx) const
       -> decltype(ctx.out()) {
     const auto& ts = arg.style;
-    const auto& value = arg.value;
     auto out = ctx.out();
 
     bool has_style = false;
     if (ts.has_emphasis()) {
       has_style = true;
       auto emphasis = detail::make_emphasis<Char>(ts.get_emphasis());
-      out = std::copy(emphasis.begin(), emphasis.end(), out);
+      out = detail::copy<Char>(emphasis.begin(), emphasis.end(), out);
     }
     if (ts.has_foreground()) {
       has_style = true;
       auto foreground =
           detail::make_foreground_color<Char>(ts.get_foreground());
-      out = std::copy(foreground.begin(), foreground.end(), out);
+      out = detail::copy<Char>(foreground.begin(), foreground.end(), out);
     }
     if (ts.has_background()) {
       has_style = true;
       auto background =
           detail::make_background_color<Char>(ts.get_background());
-      out = std::copy(background.begin(), background.end(), out);
+      out = detail::copy<Char>(background.begin(), background.end(), out);
     }
-    out = formatter<T, Char>::format(value, ctx);
+    out = formatter<T, Char>::format(arg.value, ctx);
     if (has_style) {
       auto reset_color = string_view("\x1b[0m");
-      out = std::copy(reset_color.begin(), reset_color.end(), out);
+      out = detail::copy<Char>(reset_color.begin(), reset_color.end(), out);
     }
     return out;
   }
 };
 
 /**
-  \rst
+ * Returns an argument that will be formatted using ANSI escape sequences,
-  Returns an argument that will be formatted using ANSI escape sequences,
+ * to be used in a formatting function.
-  to be used in a formatting function.
+ *
-
+ * **Example**:
-  **Example**::
+ *
-
+ *     fmt::print("Elapsed time: {0:.2f} seconds",
-    fmt::print("Elapsed time: {0:.2f} seconds",
+ *                fmt::styled(1.23, fmt::fg(fmt::color::green) |
-               fmt::styled(1.23, fmt::fg(fmt::color::green) |
+ *                                  fmt::bg(fmt::color::blue)));
-                                 fmt::bg(fmt::color::blue)));
-  \endrst
  */
 template <typename T>
 FMT_CONSTEXPR auto styled(const T& value, text_style ts)

3rdparty/fmt/include/fmt/compile.h

@@ -8,49 +8,44 @@
 #ifndef FMT_COMPILE_H_
 #define FMT_COMPILE_H_
 
+#ifndef FMT_MODULE
+#  include <iterator>  // std::back_inserter
+#endif
+
 #include "format.h"
 
 FMT_BEGIN_NAMESPACE
-namespace detail {
-
-template <typename Char, typename InputIt>
-FMT_CONSTEXPR inline auto copy_str(InputIt begin, InputIt end,
-                                   counting_iterator it) -> counting_iterator {
-  return it + (end - begin);
-}
 
 // A compile-time string which is compiled into fast formatting code.
-class compiled_string {};
+FMT_EXPORT class compiled_string {};
+
+namespace detail {
 
 template <typename S>
 struct is_compiled_string : std::is_base_of<compiled_string, S> {};
 
 /**
-  \rst
+ * Converts a string literal `s` into a format string that will be parsed at
-  Converts a string literal *s* into a format string that will be parsed at
+ * compile time and converted into efficient formatting code. Requires C++17
-  compile time and converted into efficient formatting code. Requires C++17
+ * `constexpr if` compiler support.
-  ``constexpr if`` compiler support.
+ *
-
+ * **Example**:
-  **Example**::
+ *
-
+ *     // Converts 42 into std::string using the most efficient method and no
-    // Converts 42 into std::string using the most efficient method and no
+ *     // runtime format string processing.
-    // runtime format string processing.
+ *     std::string s = fmt::format(FMT_COMPILE("{}"), 42);
-    std::string s = fmt::format(FMT_COMPILE("{}"), 42);
-  \endrst
  */
 #if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction)
-#  define FMT_COMPILE(s) \
+#  define FMT_COMPILE(s) FMT_STRING_IMPL(s, fmt::compiled_string)
-    FMT_STRING_IMPL(s, fmt::detail::compiled_string, explicit)
 #else
 #  define FMT_COMPILE(s) FMT_STRING(s)
 #endif
 
 #if FMT_USE_NONTYPE_TEMPLATE_ARGS
-template <typename Char, size_t N,
+template <typename Char, size_t N, fmt::detail::fixed_string<Char, N> Str>
-          fmt::detail_exported::fixed_string<Char, N> Str>
 struct udl_compiled_string : compiled_string {
   using char_type = Char;
-  explicit constexpr operator basic_string_view<char_type>() const {
+  constexpr explicit operator basic_string_view<char_type>() const {
     return {Str.data, N - 1};
   }
 };
@@ -75,6 +70,29 @@ constexpr const auto& get([[maybe_unused]] const T& first,
     return detail::get<N - 1>(rest...);
 }
 
+#  if FMT_USE_NONTYPE_TEMPLATE_ARGS
+template <int N, typename T, typename... Args, typename Char>
+constexpr auto get_arg_index_by_name(basic_string_view<Char> name) -> int {
+  if constexpr (is_static_named_arg<T>()) {
+    if (name == T::name) return N;
+  }
+  if constexpr (sizeof...(Args) > 0)
+    return get_arg_index_by_name<N + 1, Args...>(name);
+  (void)name;  // Workaround an MSVC bug about "unused" parameter.
+  return -1;
+}
+#  endif
+
+template <typename... Args, typename Char>
+FMT_CONSTEXPR auto get_arg_index_by_name(basic_string_view<Char> name) -> int {
+#  if FMT_USE_NONTYPE_TEMPLATE_ARGS
+  if constexpr (sizeof...(Args) > 0)
+    return get_arg_index_by_name<0, Args...>(name);
+#  endif
+  (void)name;
+  return -1;
+}
+
 template <typename Char, typename... Args>
 constexpr int get_arg_index_by_name(basic_string_view<Char> name,
                                     type_list<Args...>) {
@@ -144,11 +162,12 @@ template <typename Char, typename T, int N> struct field {
   template <typename OutputIt, typename... Args>
   constexpr OutputIt format(OutputIt out, const Args&... args) const {
     const T& arg = get_arg_checked<T, N>(args...);
-    if constexpr (std::is_convertible_v<T, basic_string_view<Char>>) {
+    if constexpr (std::is_convertible<T, basic_string_view<Char>>::value) {
       auto s = basic_string_view<Char>(arg);
-      return copy_str<Char>(s.begin(), s.end(), out);
+      return copy<Char>(s.begin(), s.end(), out);
+    } else {
+      return write<Char>(out, arg);
     }
-    return write<Char>(out, arg);
   }
 };
 
@@ -236,13 +255,12 @@ constexpr size_t parse_text(basic_string_view<Char> str, size_t pos) {
 }
 
 template <typename Args, size_t POS, int ID, typename S>
-constexpr auto compile_format_string(S format_str);
+constexpr auto compile_format_string(S fmt);
 
 template <typename Args, size_t POS, int ID, typename T, typename S>
-constexpr auto parse_tail(T head, S format_str) {
+constexpr auto parse_tail(T head, S fmt) {
-  if constexpr (POS !=
+  if constexpr (POS != basic_string_view<typename S::char_type>(fmt).size()) {
-                basic_string_view<typename S::char_type>(format_str).size()) {
+    constexpr auto tail = compile_format_string<Args, POS, ID>(fmt);
-    constexpr auto tail = compile_format_string<Args, POS, ID>(format_str);
     if constexpr (std::is_same<remove_cvref_t<decltype(tail)>,
                                unknown_format>())
       return tail;
@@ -274,6 +292,7 @@ constexpr parse_specs_result<T, Char> parse_specs(basic_string_view<Char> str,
 }
 
 template <typename Char> struct arg_id_handler {
+  arg_id_kind kind;
   arg_ref<Char> arg_id;
 
   constexpr int on_auto() {
@@ -281,25 +300,28 @@ template <typename Char> struct arg_id_handler {
     return 0;
   }
   constexpr int on_index(int id) {
+    kind = arg_id_kind::index;
     arg_id = arg_ref<Char>(id);
     return 0;
   }
   constexpr int on_name(basic_string_view<Char> id) {
+    kind = arg_id_kind::name;
     arg_id = arg_ref<Char>(id);
     return 0;
   }
 };
 
 template <typename Char> struct parse_arg_id_result {
+  arg_id_kind kind;
   arg_ref<Char> arg_id;
   const Char* arg_id_end;
 };
 
 template <int ID, typename Char>
 constexpr auto parse_arg_id(const Char* begin, const Char* end) {
-  auto handler = arg_id_handler<Char>{arg_ref<Char>{}};
+  auto handler = arg_id_handler<Char>{arg_id_kind::none, arg_ref<Char>{}};
   auto arg_id_end = parse_arg_id(begin, end, handler);
-  return parse_arg_id_result<Char>{handler.arg_id, arg_id_end};
+  return parse_arg_id_result<Char>{handler.kind, handler.arg_id, arg_id_end};
 }
 
 template <typename T, typename Enable = void> struct field_type {
@@ -313,14 +335,13 @@ struct field_type<T, enable_if_t<detail::is_named_arg<T>::value>> {
 
 template <typename T, typename Args, size_t END_POS, int ARG_INDEX, int NEXT_ID,
           typename S>
-constexpr auto parse_replacement_field_then_tail(S format_str) {
+constexpr auto parse_replacement_field_then_tail(S fmt) {
   using char_type = typename S::char_type;
-  constexpr auto str = basic_string_view<char_type>(format_str);
+  constexpr auto str = basic_string_view<char_type>(fmt);
   constexpr char_type c = END_POS != str.size() ? str[END_POS] : char_type();
   if constexpr (c == '}') {
     return parse_tail<Args, END_POS + 1, NEXT_ID>(
-        field<char_type, typename field_type<T>::type, ARG_INDEX>(),
+        field<char_type, typename field_type<T>::type, ARG_INDEX>(), fmt);
-        format_str);
   } else if constexpr (c != ':') {
     FMT_THROW(format_error("expected ':'"));
   } else {
@@ -333,7 +354,7 @@ constexpr auto parse_replacement_field_then_tail(S format_str) {
       return parse_tail<Args, result.end + 1, result.next_arg_id>(
           spec_field<char_type, typename field_type<T>::type, ARG_INDEX>{
               result.fmt},
-          format_str);
+          fmt);
     }
   }
 }
@@ -341,22 +362,21 @@ constexpr auto parse_replacement_field_then_tail(S format_str) {
 // Compiles a non-empty format string and returns the compiled representation
 // or unknown_format() on unrecognized input.
 template <typename Args, size_t POS, int ID, typename S>
-constexpr auto compile_format_string(S format_str) {
+constexpr auto compile_format_string(S fmt) {
   using char_type = typename S::char_type;
-  constexpr auto str = basic_string_view<char_type>(format_str);
+  constexpr auto str = basic_string_view<char_type>(fmt);
   if constexpr (str[POS] == '{') {
     if constexpr (POS + 1 == str.size())
       FMT_THROW(format_error("unmatched '{' in format string"));
     if constexpr (str[POS + 1] == '{') {
-      return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str);
+      return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), fmt);
     } else if constexpr (str[POS + 1] == '}' || str[POS + 1] == ':') {
       static_assert(ID != manual_indexing_id,
                     "cannot switch from manual to automatic argument indexing");
       constexpr auto next_id =
           ID != manual_indexing_id ? ID + 1 : manual_indexing_id;
       return parse_replacement_field_then_tail<get_type<ID, Args>, Args,
-                                               POS + 1, ID, next_id>(
+                                               POS + 1, ID, next_id>(fmt);
-          format_str);
     } else {
       constexpr auto arg_id_result =
           parse_arg_id<ID>(str.data() + POS + 1, str.data() + str.size());
@@ -364,28 +384,27 @@ constexpr auto compile_format_string(S format_str) {
       constexpr char_type c =
           arg_id_end_pos != str.size() ? str[arg_id_end_pos] : char_type();
       static_assert(c == '}' || c == ':', "missing '}' in format string");
-      if constexpr (arg_id_result.arg_id.kind == arg_id_kind::index) {
+      if constexpr (arg_id_result.kind == arg_id_kind::index) {
         static_assert(
             ID == manual_indexing_id || ID == 0,
             "cannot switch from automatic to manual argument indexing");
-        constexpr auto arg_index = arg_id_result.arg_id.val.index;
+        constexpr auto arg_index = arg_id_result.arg_id.index;
         return parse_replacement_field_then_tail<get_type<arg_index, Args>,
                                                  Args, arg_id_end_pos,
                                                  arg_index, manual_indexing_id>(
-            format_str);
+            fmt);
-      } else if constexpr (arg_id_result.arg_id.kind == arg_id_kind::name) {
+      } else if constexpr (arg_id_result.kind == arg_id_kind::name) {
         constexpr auto arg_index =
-            get_arg_index_by_name(arg_id_result.arg_id.val.name, Args{});
+            get_arg_index_by_name(arg_id_result.arg_id.name, Args{});
         if constexpr (arg_index >= 0) {
           constexpr auto next_id =
               ID != manual_indexing_id ? ID + 1 : manual_indexing_id;
           return parse_replacement_field_then_tail<
               decltype(get_type<arg_index, Args>::value), Args, arg_id_end_pos,
-              arg_index, next_id>(format_str);
+              arg_index, next_id>(fmt);
         } else if constexpr (c == '}') {
           return parse_tail<Args, arg_id_end_pos + 1, ID>(
-              runtime_named_field<char_type>{arg_id_result.arg_id.val.name},
+              runtime_named_field<char_type>{arg_id_result.arg_id.name}, fmt);
-              format_str);
         } else if constexpr (c == ':') {
           return unknown_format();  // no type info for specs parsing
         }
@@ -394,29 +413,26 @@ constexpr auto compile_format_string(S format_str) {
   } else if constexpr (str[POS] == '}') {
     if constexpr (POS + 1 == str.size())
       FMT_THROW(format_error("unmatched '}' in format string"));
-    return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), format_str);
+    return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), fmt);
   } else {
     constexpr auto end = parse_text(str, POS + 1);
     if constexpr (end - POS > 1) {
-      return parse_tail<Args, end, ID>(make_text(str, POS, end - POS),
+      return parse_tail<Args, end, ID>(make_text(str, POS, end - POS), fmt);
-                                       format_str);
     } else {
-      return parse_tail<Args, end, ID>(code_unit<char_type>{str[POS]},
+      return parse_tail<Args, end, ID>(code_unit<char_type>{str[POS]}, fmt);
-                                       format_str);
     }
   }
 }
 
 template <typename... Args, typename S,
           FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
-constexpr auto compile(S format_str) {
+constexpr auto compile(S fmt) {
-  constexpr auto str = basic_string_view<typename S::char_type>(format_str);
+  constexpr auto str = basic_string_view<typename S::char_type>(fmt);
   if constexpr (str.size() == 0) {
     return detail::make_text(str, 0, 0);
   } else {
     constexpr auto result =
-        detail::compile_format_string<detail::type_list<Args...>, 0, 0>(
+        detail::compile_format_string<detail::type_list<Args...>, 0, 0>(fmt);
-            format_str);
     return result;
   }
 }
@@ -488,40 +504,40 @@ FMT_CONSTEXPR OutputIt format_to(OutputIt out, const S&, Args&&... args) {
 
 template <typename OutputIt, typename S, typename... Args,
           FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
-auto format_to_n(OutputIt out, size_t n, const S& format_str, Args&&... args)
+auto format_to_n(OutputIt out, size_t n, const S& fmt, Args&&... args)
     -> format_to_n_result<OutputIt> {
   using traits = detail::fixed_buffer_traits;
   auto buf = detail::iterator_buffer<OutputIt, char, traits>(out, n);
-  fmt::format_to(std::back_inserter(buf), format_str,
+  fmt::format_to(std::back_inserter(buf), fmt, std::forward<Args>(args)...);
-                 std::forward<Args>(args)...);
   return {buf.out(), buf.count()};
 }
 
 template <typename S, typename... Args,
           FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
-FMT_CONSTEXPR20 auto formatted_size(const S& format_str, const Args&... args)
+FMT_CONSTEXPR20 auto formatted_size(const S& fmt, const Args&... args)
     -> size_t {
-  return fmt::format_to(detail::counting_iterator(), format_str, args...)
+  auto buf = detail::counting_buffer<>();
-      .count();
+  fmt::format_to(appender(buf), fmt, args...);
+  return buf.count();
 }
 
 template <typename S, typename... Args,
           FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
-void print(std::FILE* f, const S& format_str, const Args&... args) {
+void print(std::FILE* f, const S& fmt, const Args&... args) {
-  memory_buffer buffer;
+  auto buf = memory_buffer();
-  fmt::format_to(std::back_inserter(buffer), format_str, args...);
+  fmt::format_to(appender(buf), fmt, args...);
-  detail::print(f, {buffer.data(), buffer.size()});
+  detail::print(f, {buf.data(), buf.size()});
 }
 
 template <typename S, typename... Args,
           FMT_ENABLE_IF(detail::is_compiled_string<S>::value)>
-void print(const S& format_str, const Args&... args) {
+void print(const S& fmt, const Args&... args) {
-  print(stdout, format_str, args...);
+  print(stdout, fmt, args...);
 }
 
 #if FMT_USE_NONTYPE_TEMPLATE_ARGS
 inline namespace literals {
-template <detail_exported::fixed_string Str> constexpr auto operator""_cf() {
+template <detail::fixed_string Str> constexpr auto operator""_cf() {
   using char_t = remove_cvref_t<decltype(Str.data[0])>;
   return detail::udl_compiled_string<char_t, sizeof(Str.data) / sizeof(char_t),
                                      Str>();

3rdparty/fmt/include/fmt/format-inl.h

@@ -8,36 +8,36 @@
 #ifndef FMT_FORMAT_INL_H_
 #define FMT_FORMAT_INL_H_
 
-#include <algorithm>
+#ifndef FMT_MODULE
-#include <cerrno>  // errno
+#  include <algorithm>
-#include <climits>
+#  include <cerrno>  // errno
-#include <cmath>
+#  include <climits>
-#include <exception>
+#  include <cmath>
-
+#  include <exception>
-#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
-#  include <locale>
 #endif
 
-#if defined(_WIN32) && !defined(FMT_WINDOWS_NO_WCHAR)
+#if defined(_WIN32) && !defined(FMT_USE_WRITE_CONSOLE)
 #  include <io.h>  // _isatty
 #endif
 
 #include "format.h"
 
+#if FMT_USE_LOCALE
+#  include <locale>
+#endif
+
+#ifndef FMT_FUNC
+#  define FMT_FUNC
+#endif
+
 FMT_BEGIN_NAMESPACE
 namespace detail {
 
 FMT_FUNC void assert_fail(const char* file, int line, const char* message) {
   // Use unchecked std::fprintf to avoid triggering another assertion when
-  // writing to stderr fails
+  // writing to stderr fails.
-  std::fprintf(stderr, "%s:%d: assertion failed: %s", file, line, message);
+  fprintf(stderr, "%s:%d: assertion failed: %s", file, line, message);
-  // Chosen instead of std::abort to satisfy Clang in CUDA mode during device
+  abort();
-  // code pass.
-  std::terminate();
-}
-
-FMT_FUNC void throw_format_error(const char* message) {
-  FMT_THROW(format_error(message));
 }
 
 FMT_FUNC void format_error_code(detail::buffer<char>& out, int error_code,
@@ -56,89 +56,105 @@ FMT_FUNC void format_error_code(detail::buffer<char>& out, int error_code,
     ++error_code_size;
   }
   error_code_size += detail::to_unsigned(detail::count_digits(abs_value));
-  auto it = buffer_appender<char>(out);
+  auto it = appender(out);
   if (message.size() <= inline_buffer_size - error_code_size)
     fmt::format_to(it, FMT_STRING("{}{}"), message, SEP);
   fmt::format_to(it, FMT_STRING("{}{}"), ERROR_STR, error_code);
   FMT_ASSERT(out.size() <= inline_buffer_size, "");
 }
 
-FMT_FUNC void report_error(format_func func, int error_code,
+FMT_FUNC void do_report_error(format_func func, int error_code,
-                           const char* message) noexcept {
+                              const char* message) noexcept {
   memory_buffer full_message;
   func(full_message, error_code, message);
-  // Don't use fwrite_fully because the latter may throw.
+  // Don't use fwrite_all because the latter may throw.
   if (std::fwrite(full_message.data(), full_message.size(), 1, stderr) > 0)
     std::fputc('\n', stderr);
 }
 
 // A wrapper around fwrite that throws on error.
-inline void fwrite_fully(const void* ptr, size_t count, FILE* stream) {
+inline void fwrite_all(const void* ptr, size_t count, FILE* stream) {
   size_t written = std::fwrite(ptr, 1, count, stream);
   if (written < count)
     FMT_THROW(system_error(errno, FMT_STRING("cannot write to file")));
 }
 
-#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
+#if FMT_USE_LOCALE
+using std::locale;
+using std::numpunct;
+using std::use_facet;
+
 template <typename Locale>
 locale_ref::locale_ref(const Locale& loc) : locale_(&loc) {
-  static_assert(std::is_same<Locale, std::locale>::value, "");
+  static_assert(std::is_same<Locale, locale>::value, "");
 }
+#else
+struct locale {};
+template <typename Char> struct numpunct {
+  auto grouping() const -> std::string { return "\03"; }
+  auto thousands_sep() const -> Char { return ','; }
+  auto decimal_point() const -> Char { return '.'; }
+};
+template <typename Facet> Facet use_facet(locale) { return {}; }
+#endif  // FMT_USE_LOCALE
 
 template <typename Locale> auto locale_ref::get() const -> Locale {
-  static_assert(std::is_same<Locale, std::locale>::value, "");
+  static_assert(std::is_same<Locale, locale>::value, "");
-  return locale_ ? *static_cast<const std::locale*>(locale_) : std::locale();
+#if FMT_USE_LOCALE
+  if (locale_) return *static_cast<const locale*>(locale_);
+#endif
+  return locale();
 }
 
 template <typename Char>
 FMT_FUNC auto thousands_sep_impl(locale_ref loc) -> thousands_sep_result<Char> {
-  auto& facet = std::use_facet<std::numpunct<Char>>(loc.get<std::locale>());
+  auto&& facet = use_facet<numpunct<Char>>(loc.get<locale>());
   auto grouping = facet.grouping();
   auto thousands_sep = grouping.empty() ? Char() : facet.thousands_sep();
   return {std::move(grouping), thousands_sep};
 }
 template <typename Char>
 FMT_FUNC auto decimal_point_impl(locale_ref loc) -> Char {
-  return std::use_facet<std::numpunct<Char>>(loc.get<std::locale>())
+  return use_facet<numpunct<Char>>(loc.get<locale>()).decimal_point();
-      .decimal_point();
 }
-#else
-template <typename Char>
-FMT_FUNC auto thousands_sep_impl(locale_ref) -> thousands_sep_result<Char> {
-  return {"\03", FMT_STATIC_THOUSANDS_SEPARATOR};
-}
-template <typename Char> FMT_FUNC Char decimal_point_impl(locale_ref) {
-  return '.';
-}
-#endif
 
+#if FMT_USE_LOCALE
 FMT_FUNC auto write_loc(appender out, loc_value value,
-                        const format_specs<>& specs, locale_ref loc) -> bool {
+                        const format_specs& specs, locale_ref loc) -> bool {
-#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
   auto locale = loc.get<std::locale>();
   // We cannot use the num_put<char> facet because it may produce output in
   // a wrong encoding.
   using facet = format_facet<std::locale>;
   if (std::has_facet<facet>(locale))
-    return std::use_facet<facet>(locale).put(out, value, specs);
+    return use_facet<facet>(locale).put(out, value, specs);
   return facet(locale).put(out, value, specs);
-#endif
-  return false;
 }
+#endif
 }  // namespace detail
 
+FMT_FUNC void report_error(const char* message) {
+#if FMT_USE_EXCEPTIONS
+  // Use FMT_THROW instead of throw to avoid bogus unreachable code warnings
+  // from MSVC.
+  FMT_THROW(format_error(message));
+#else
+  fputs(message, stderr);
+  abort();
+#endif
+}
+
 template <typename Locale> typename Locale::id format_facet<Locale>::id;
 
-#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
 template <typename Locale> format_facet<Locale>::format_facet(Locale& loc) {
-  auto& numpunct = std::use_facet<std::numpunct<char>>(loc);
+  auto& np = detail::use_facet<detail::numpunct<char>>(loc);
-  grouping_ = numpunct.grouping();
+  grouping_ = np.grouping();
-  if (!grouping_.empty()) separator_ = std::string(1, numpunct.thousands_sep());
+  if (!grouping_.empty()) separator_ = std::string(1, np.thousands_sep());
 }
 
+#if FMT_USE_LOCALE
 template <>
 FMT_API FMT_FUNC auto format_facet<std::locale>::do_put(
-    appender out, loc_value val, const format_specs<>& specs) const -> bool {
+    appender out, loc_value val, const format_specs& specs) const -> bool {
   return val.visit(
       detail::loc_writer<>{out, specs, separator_, grouping_, decimal_point_});
 }
@@ -1411,7 +1427,7 @@ FMT_FUNC void format_system_error(detail::buffer<char>& out, int error_code,
                                   const char* message) noexcept {
   FMT_TRY {
     auto ec = std::error_code(error_code, std::generic_category());
-    write(std::back_inserter(out), std::system_error(ec, message).what());
+    detail::write(appender(out), std::system_error(ec, message).what());
     return;
   }
   FMT_CATCH(...) {}
@@ -1420,7 +1436,7 @@ FMT_FUNC void format_system_error(detail::buffer<char>& out, int error_code,
 
 FMT_FUNC void report_system_error(int error_code,
                                   const char* message) noexcept {
-  report_error(format_system_error, error_code, message);
+  do_report_error(format_system_error, error_code, message);
 }
 
 FMT_FUNC auto vformat(string_view fmt, format_args args) -> std::string {
@@ -1432,9 +1448,252 @@ FMT_FUNC auto vformat(string_view fmt, format_args args) -> std::string {
 }
 
 namespace detail {
-#if !defined(_WIN32) || defined(FMT_WINDOWS_NO_WCHAR)
+
+FMT_FUNC void vformat_to(buffer<char>& buf, string_view fmt, format_args args,
+                         locale_ref loc) {
+  auto out = appender(buf);
+  if (fmt.size() == 2 && equal2(fmt.data(), "{}"))
+    return args.get(0).visit(default_arg_formatter<char>{out});
+  parse_format_string(
+      fmt, format_handler<char>{parse_context<char>(fmt), {out, args, loc}});
+}
+
+template <typename T> struct span {
+  T* data;
+  size_t size;
+};
+
+template <typename F> auto flockfile(F* f) -> decltype(_lock_file(f)) {
+  _lock_file(f);
+}
+template <typename F> auto funlockfile(F* f) -> decltype(_unlock_file(f)) {
+  _unlock_file(f);
+}
+
+#ifndef getc_unlocked
+template <typename F> auto getc_unlocked(F* f) -> decltype(_fgetc_nolock(f)) {
+  return _fgetc_nolock(f);
+}
+#endif
+
+template <typename F = FILE, typename Enable = void>
+struct has_flockfile : std::false_type {};
+
+template <typename F>
+struct has_flockfile<F, void_t<decltype(flockfile(&std::declval<F&>()))>>
+    : std::true_type {};
+
+// A FILE wrapper. F is FILE defined as a template parameter to make system API
+// detection work.
+template <typename F> class file_base {
+ public:
+  F* file_;
+
+ public:
+  file_base(F* file) : file_(file) {}
+  operator F*() const { return file_; }
+
+  // Reads a code unit from the stream.
+  auto get() -> int {
+    int result = getc_unlocked(file_);
+    if (result == EOF && ferror(file_) != 0)
+      FMT_THROW(system_error(errno, FMT_STRING("getc failed")));
+    return result;
+  }
+
+  // Puts the code unit back into the stream buffer.
+  void unget(char c) {
+    if (ungetc(c, file_) == EOF)
+      FMT_THROW(system_error(errno, FMT_STRING("ungetc failed")));
+  }
+
+  void flush() { fflush(this->file_); }
+};
+
+// A FILE wrapper for glibc.
+template <typename F> class glibc_file : public file_base<F> {
+ private:
+  enum {
+    line_buffered = 0x200,  // _IO_LINE_BUF
+    unbuffered = 2          // _IO_UNBUFFERED
+  };
+
+ public:
+  using file_base<F>::file_base;
+
+  auto is_buffered() const -> bool {
+    return (this->file_->_flags & unbuffered) == 0;
+  }
+
+  void init_buffer() {
+    if (this->file_->_IO_write_ptr) return;
+    // Force buffer initialization by placing and removing a char in a buffer.
+    assume(this->file_->_IO_write_ptr >= this->file_->_IO_write_end);
+    putc_unlocked(0, this->file_);
+    --this->file_->_IO_write_ptr;
+  }
+
+  // Returns the file's read buffer.
+  auto get_read_buffer() const -> span<const char> {
+    auto ptr = this->file_->_IO_read_ptr;
+    return {ptr, to_unsigned(this->file_->_IO_read_end - ptr)};
+  }
+
+  // Returns the file's write buffer.
+  auto get_write_buffer() const -> span<char> {
+    auto ptr = this->file_->_IO_write_ptr;
+    return {ptr, to_unsigned(this->file_->_IO_buf_end - ptr)};
+  }
+
+  void advance_write_buffer(size_t size) { this->file_->_IO_write_ptr += size; }
+
+  bool needs_flush() const {
+    if ((this->file_->_flags & line_buffered) == 0) return false;
+    char* end = this->file_->_IO_write_end;
+    return memchr(end, '\n', to_unsigned(this->file_->_IO_write_ptr - end));
+  }
+
+  void flush() { fflush_unlocked(this->file_); }
+};
+
+// A FILE wrapper for Apple's libc.
+template <typename F> class apple_file : public file_base<F> {
+ private:
+  enum {
+    line_buffered = 1,  // __SNBF
+    unbuffered = 2      // __SLBF
+  };
+
+ public:
+  using file_base<F>::file_base;
+
+  auto is_buffered() const -> bool {
+    return (this->file_->_flags & unbuffered) == 0;
+  }
+
+  void init_buffer() {
+    if (this->file_->_p) return;
+    // Force buffer initialization by placing and removing a char in a buffer.
+    putc_unlocked(0, this->file_);
+    --this->file_->_p;
+    ++this->file_->_w;
+  }
+
+  auto get_read_buffer() const -> span<const char> {
+    return {reinterpret_cast<char*>(this->file_->_p),
+            to_unsigned(this->file_->_r)};
+  }
+
+  auto get_write_buffer() const -> span<char> {
+    return {reinterpret_cast<char*>(this->file_->_p),
+            to_unsigned(this->file_->_bf._base + this->file_->_bf._size -
+                        this->file_->_p)};
+  }
+
+  void advance_write_buffer(size_t size) {
+    this->file_->_p += size;
+    this->file_->_w -= size;
+  }
+
+  bool needs_flush() const {
+    if ((this->file_->_flags & line_buffered) == 0) return false;
+    return memchr(this->file_->_p + this->file_->_w, '\n',
+                  to_unsigned(-this->file_->_w));
+  }
+};
+
+// A fallback FILE wrapper.
+template <typename F> class fallback_file : public file_base<F> {
+ private:
+  char next_;  // The next unconsumed character in the buffer.
+  bool has_next_ = false;
+
+ public:
+  using file_base<F>::file_base;
+
+  auto is_buffered() const -> bool { return false; }
+  auto needs_flush() const -> bool { return false; }
+  void init_buffer() {}
+
+  auto get_read_buffer() const -> span<const char> {
+    return {&next_, has_next_ ? 1u : 0u};
+  }
+
+  auto get_write_buffer() const -> span<char> { return {nullptr, 0}; }
+
+  void advance_write_buffer(size_t) {}
+
+  auto get() -> int {
+    has_next_ = false;
+    return file_base<F>::get();
+  }
+
+  void unget(char c) {
+    file_base<F>::unget(c);
+    next_ = c;
+    has_next_ = true;
+  }
+};
+
+#ifndef FMT_USE_FALLBACK_FILE
+#  define FMT_USE_FALLBACK_FILE 0
+#endif
+
+template <typename F,
+          FMT_ENABLE_IF(sizeof(F::_p) != 0 && !FMT_USE_FALLBACK_FILE)>
+auto get_file(F* f, int) -> apple_file<F> {
+  return f;
+}
+template <typename F,
+          FMT_ENABLE_IF(sizeof(F::_IO_read_ptr) != 0 && !FMT_USE_FALLBACK_FILE)>
+inline auto get_file(F* f, int) -> glibc_file<F> {
+  return f;
+}
+
+inline auto get_file(FILE* f, ...) -> fallback_file<FILE> { return f; }
+
+using file_ref = decltype(get_file(static_cast<FILE*>(nullptr), 0));
+
+template <typename F = FILE, typename Enable = void>
+class file_print_buffer : public buffer<char> {
+ public:
+  explicit file_print_buffer(F*) : buffer(nullptr, size_t()) {}
+};
+
+template <typename F>
+class file_print_buffer<F, enable_if_t<has_flockfile<F>::value>>
+    : public buffer<char> {
+ private:
+  file_ref file_;
+
+  static void grow(buffer<char>& base, size_t) {
+    auto& self = static_cast<file_print_buffer&>(base);
+    self.file_.advance_write_buffer(self.size());
+    if (self.file_.get_write_buffer().size == 0) self.file_.flush();
+    auto buf = self.file_.get_write_buffer();
+    FMT_ASSERT(buf.size > 0, "");
+    self.set(buf.data, buf.size);
+    self.clear();
+  }
+
+ public:
+  explicit file_print_buffer(F* f) : buffer(grow, size_t()), file_(f) {
+    flockfile(f);
+    file_.init_buffer();
+    auto buf = file_.get_write_buffer();
+    set(buf.data, buf.size);
+  }
+  ~file_print_buffer() {
+    file_.advance_write_buffer(size());
+    bool flush = file_.needs_flush();
+    F* f = file_;    // Make funlockfile depend on the template parameter F
+    funlockfile(f);  // for the system API detection to work.
+    if (flush) fflush(file_);
+  }
+};
+
+#if !defined(_WIN32) || defined(FMT_USE_WRITE_CONSOLE)
 FMT_FUNC auto write_console(int, string_view) -> bool { return false; }
-FMT_FUNC auto write_console(std::FILE*, string_view) -> bool { return false; }
 #else
 using dword = conditional_t<sizeof(long) == 4, unsigned long, unsigned>;
 extern "C" __declspec(dllimport) int __stdcall WriteConsoleW(  //
@@ -1445,39 +1704,51 @@ FMT_FUNC bool write_console(int fd, string_view text) {
   return WriteConsoleW(reinterpret_cast<void*>(_get_osfhandle(fd)), u16.c_str(),
                        static_cast<dword>(u16.size()), nullptr, nullptr) != 0;
 }
-
-FMT_FUNC auto write_console(std::FILE* f, string_view text) -> bool {
-  return write_console(_fileno(f), text);
-}
 #endif
 
 #ifdef _WIN32
 // Print assuming legacy (non-Unicode) encoding.
-FMT_FUNC void vprint_mojibake(std::FILE* f, string_view fmt, format_args args) {
+FMT_FUNC void vprint_mojibake(std::FILE* f, string_view fmt, format_args args,
+                              bool newline) {
   auto buffer = memory_buffer();
   detail::vformat_to(buffer, fmt, args);
-  fwrite_fully(buffer.data(), buffer.size(), f);
+  if (newline) buffer.push_back('\n');
+  fwrite_all(buffer.data(), buffer.size(), f);
 }
 #endif
 
 FMT_FUNC void print(std::FILE* f, string_view text) {
-#ifdef _WIN32
+#if defined(_WIN32) && !defined(FMT_USE_WRITE_CONSOLE)
   int fd = _fileno(f);
   if (_isatty(fd)) {
     std::fflush(f);
     if (write_console(fd, text)) return;
   }
 #endif
-  fwrite_fully(text.data(), text.size(), f);
+  fwrite_all(text.data(), text.size(), f);
 }
 }  // namespace detail
 
-FMT_FUNC void vprint(std::FILE* f, string_view fmt, format_args args) {
+FMT_FUNC void vprint_buffered(std::FILE* f, string_view fmt, format_args args) {
   auto buffer = memory_buffer();
   detail::vformat_to(buffer, fmt, args);
   detail::print(f, {buffer.data(), buffer.size()});
 }
 
+FMT_FUNC void vprint(std::FILE* f, string_view fmt, format_args args) {
+  if (!detail::file_ref(f).is_buffered() || !detail::has_flockfile<>())
+    return vprint_buffered(f, fmt, args);
+  auto&& buffer = detail::file_print_buffer<>(f);
+  return detail::vformat_to(buffer, fmt, args);
+}
+
+FMT_FUNC void vprintln(std::FILE* f, string_view fmt, format_args args) {
+  auto buffer = memory_buffer();
+  detail::vformat_to(buffer, fmt, args);
+  buffer.push_back('\n');
+  detail::print(f, {buffer.data(), buffer.size()});
+}
+
 FMT_FUNC void vprint(string_view fmt, format_args args) {
   vprint(stdout, fmt, args);
 }

3rdparty/fmt/include/fmt/os.h

@@ -8,18 +8,18 @@
 #ifndef FMT_OS_H_
 #define FMT_OS_H_
 
-#include <cerrno>
-#include <cstddef>
-#include <cstdio>
-#include <system_error>  // std::system_error
-
 #include "format.h"
 
-#if defined __APPLE__ || defined(__FreeBSD__)
+#ifndef FMT_MODULE
+#  include <cerrno>
+#  include <cstddef>
+#  include <cstdio>
+#  include <system_error>  // std::system_error
+
 #  if FMT_HAS_INCLUDE(<xlocale.h>)
-#    include <xlocale.h>  // for LC_NUMERIC_MASK on OS X
+#    include <xlocale.h>  // LC_NUMERIC_MASK on macOS
 #  endif
-#endif
+#endif  // FMT_MODULE
 
 #ifndef FMT_USE_FCNTL
 // UWP doesn't provide _pipe.
@@ -77,46 +77,33 @@ FMT_BEGIN_NAMESPACE
 FMT_BEGIN_EXPORT
 
 /**
-  \rst
+ * A reference to a null-terminated string. It can be constructed from a C
-  A reference to a null-terminated string. It can be constructed from a C
+ * string or `std::string`.
-  string or ``std::string``.
+ *
-
+ * You can use one of the following type aliases for common character types:
-  You can use one of the following type aliases for common character types:
+ *
-
+ * +---------------+-----------------------------+
-  +---------------+-----------------------------+
+ * | Type          | Definition                  |
-  | Type          | Definition                  |
+ * +===============+=============================+
-  +===============+=============================+
+ * | cstring_view  | basic_cstring_view<char>    |
-  | cstring_view  | basic_cstring_view<char>    |
+ * +---------------+-----------------------------+
-  +---------------+-----------------------------+
+ * | wcstring_view | basic_cstring_view<wchar_t> |
-  | wcstring_view | basic_cstring_view<wchar_t> |
+ * +---------------+-----------------------------+
-  +---------------+-----------------------------+
+ *
-
+ * This class is most useful as a parameter type for functions that wrap C APIs.
-  This class is most useful as a parameter type to allow passing
-  different types of strings to a function, for example::
-
-    template <typename... Args>
-    std::string format(cstring_view format_str, const Args & ... args);
-
-    format("{}", 42);
-    format(std::string("{}"), 42);
-  \endrst
  */
 template <typename Char> class basic_cstring_view {
  private:
   const Char* data_;
 
  public:
-  /** Constructs a string reference object from a C string. */
+  /// Constructs a string reference object from a C string.
   basic_cstring_view(const Char* s) : data_(s) {}
 
-  /**
+  /// Constructs a string reference from an `std::string` object.
-    \rst
-    Constructs a string reference from an ``std::string`` object.
-    \endrst
-   */
   basic_cstring_view(const std::basic_string<Char>& s) : data_(s.c_str()) {}
 
-  /** Returns the pointer to a C string. */
+  /// Returns the pointer to a C string.
   auto c_str() const -> const Char* { return data_; }
 };
 
@@ -131,41 +118,38 @@ FMT_API void format_windows_error(buffer<char>& out, int error_code,
                                   const char* message) noexcept;
 }
 
-FMT_API std::system_error vwindows_error(int error_code, string_view format_str,
+FMT_API std::system_error vwindows_error(int error_code, string_view fmt,
                                          format_args args);
 
 /**
- \rst
+ * Constructs a `std::system_error` object with the description of the form
- Constructs a :class:`std::system_error` object with the description
+ *
- of the form
+ *     <message>: <system-message>
-
+ *
- .. parsed-literal::
+ * where `<message>` is the formatted message and `<system-message>` is the
-   *<message>*: *<system-message>*
+ * system message corresponding to the error code.
-
+ * `error_code` is a Windows error code as given by `GetLastError`.
- where *<message>* is the formatted message and *<system-message>* is the
+ * If `error_code` is not a valid error code such as -1, the system message
- system message corresponding to the error code.
+ * will look like "error -1".
- *error_code* is a Windows error code as given by ``GetLastError``.
+ *
- If *error_code* is not a valid error code such as -1, the system message
+ * **Example**:
- will look like "error -1".
+ *
-
+ *     // This throws a system_error with the description
- **Example**::
+ *     //   cannot open file 'madeup': The system cannot find the file
-
+ * specified.
-   // This throws a system_error with the description
+ *     // or similar (system message may vary).
-   //   cannot open file 'madeup': The system cannot find the file specified.
+ *     const char *filename = "madeup";
-   // or similar (system message may vary).
+ *     LPOFSTRUCT of = LPOFSTRUCT();
-   const char *filename = "madeup";
+ *     HFILE file = OpenFile(filename, &of, OF_READ);
-   LPOFSTRUCT of = LPOFSTRUCT();
+ *     if (file == HFILE_ERROR) {
-   HFILE file = OpenFile(filename, &of, OF_READ);
+ *       throw fmt::windows_error(GetLastError(),
-   if (file == HFILE_ERROR) {
+ *                                "cannot open file '{}'", filename);
-     throw fmt::windows_error(GetLastError(),
+ *     }
-                              "cannot open file '{}'", filename);
+ */
-   }
+template <typename... T>
- \endrst
+auto windows_error(int error_code, string_view message, const T&... args)
-*/
+    -> std::system_error {
-template <typename... Args>
+  return vwindows_error(error_code, message, vargs<T...>{{args...}});
-std::system_error windows_error(int error_code, string_view message,
-                                const Args&... args) {
-  return vwindows_error(error_code, message, fmt::make_format_args(args...));
 }
 
 // Reports a Windows error without throwing an exception.
@@ -180,8 +164,8 @@ inline auto system_category() noexcept -> const std::error_category& {
 // std::system is not available on some platforms such as iOS (#2248).
 #ifdef __OSX__
 template <typename S, typename... Args, typename Char = char_t<S>>
-void say(const S& format_str, Args&&... args) {
+void say(const S& fmt, Args&&... args) {
-  std::system(format("say \"{}\"", format(format_str, args...)).c_str());
+  std::system(format("say \"{}\"", format(fmt, args...)).c_str());
 }
 #endif
 
@@ -192,24 +176,24 @@ class buffered_file {
 
   friend class file;
 
-  explicit buffered_file(FILE* f) : file_(f) {}
+  inline explicit buffered_file(FILE* f) : file_(f) {}
 
  public:
   buffered_file(const buffered_file&) = delete;
   void operator=(const buffered_file&) = delete;
 
   // Constructs a buffered_file object which doesn't represent any file.
-  buffered_file() noexcept : file_(nullptr) {}
+  inline buffered_file() noexcept : file_(nullptr) {}
 
   // Destroys the object closing the file it represents if any.
   FMT_API ~buffered_file() noexcept;
 
  public:
-  buffered_file(buffered_file&& other) noexcept : file_(other.file_) {
+  inline buffered_file(buffered_file&& other) noexcept : file_(other.file_) {
     other.file_ = nullptr;
   }
 
-  auto operator=(buffered_file&& other) -> buffered_file& {
+  inline auto operator=(buffered_file&& other) -> buffered_file& {
     close();
     file_ = other.file_;
     other.file_ = nullptr;
@@ -223,21 +207,20 @@ class buffered_file {
   FMT_API void close();
 
   // Returns the pointer to a FILE object representing this file.
-  auto get() const noexcept -> FILE* { return file_; }
+  inline auto get() const noexcept -> FILE* { return file_; }
 
   FMT_API auto descriptor() const -> int;
 
-  void vprint(string_view format_str, format_args args) {
+  template <typename... T>
-    fmt::vprint(file_, format_str, args);
+  inline void print(string_view fmt, const T&... args) {
-  }
+    fmt::vargs<T...> vargs = {{args...}};
-
+    detail::is_locking<T...>() ? fmt::vprint_buffered(file_, fmt, vargs)
-  template <typename... Args>
+                               : fmt::vprint(file_, fmt, vargs);
-  inline void print(string_view format_str, const Args&... args) {
-    vprint(format_str, fmt::make_format_args(args...));
   }
 };
 
 #if FMT_USE_FCNTL
+
 // A file. Closed file is represented by a file object with descriptor -1.
 // Methods that are not declared with noexcept may throw
 // fmt::system_error in case of failure. Note that some errors such as
@@ -251,6 +234,8 @@ class FMT_API file {
   // Constructs a file object with a given descriptor.
   explicit file(int fd) : fd_(fd) {}
 
+  friend struct pipe;
+
  public:
   // Possible values for the oflag argument to the constructor.
   enum {
@@ -263,7 +248,7 @@ class FMT_API file {
   };
 
   // Constructs a file object which doesn't represent any file.
-  file() noexcept : fd_(-1) {}
+  inline file() noexcept : fd_(-1) {}
 
   // Opens a file and constructs a file object representing this file.
   file(cstring_view path, int oflag);
@@ -272,10 +257,10 @@ class FMT_API file {
   file(const file&) = delete;
   void operator=(const file&) = delete;
 
-  file(file&& other) noexcept : fd_(other.fd_) { other.fd_ = -1; }
+  inline file(file&& other) noexcept : fd_(other.fd_) { other.fd_ = -1; }
 
   // Move assignment is not noexcept because close may throw.
-  auto operator=(file&& other) -> file& {
+  inline auto operator=(file&& other) -> file& {
     close();
     fd_ = other.fd_;
     other.fd_ = -1;
@@ -286,7 +271,7 @@ class FMT_API file {
   ~file() noexcept;
 
   // Returns the file descriptor.
-  auto descriptor() const noexcept -> int { return fd_; }
+  inline auto descriptor() const noexcept -> int { return fd_; }
 
   // Closes the file.
   void close();
@@ -313,11 +298,6 @@ class FMT_API file {
   // necessary.
   void dup2(int fd, std::error_code& ec) noexcept;
 
-  // Creates a pipe setting up read_end and write_end file objects for reading
-  // and writing respectively.
-  // DEPRECATED! Taking files as out parameters is deprecated.
-  static void pipe(file& read_end, file& write_end);
-
   // Creates a buffered_file object associated with this file and detaches
   // this file object from the file.
   auto fdopen(const char* mode) -> buffered_file;
@@ -329,15 +309,24 @@ class FMT_API file {
 #  endif
 };
 
+struct FMT_API pipe {
+  file read_end;
+  file write_end;
+
+  // Creates a pipe setting up read_end and write_end file objects for reading
+  // and writing respectively.
+  pipe();
+};
+
 // Returns the memory page size.
 auto getpagesize() -> long;
 
 namespace detail {
 
 struct buffer_size {
-  buffer_size() = default;
+  constexpr buffer_size() = default;
   size_t value = 0;
-  auto operator=(size_t val) const -> buffer_size {
+  FMT_CONSTEXPR auto operator=(size_t val) const -> buffer_size {
     auto bs = buffer_size();
     bs.value = val;
     return bs;
@@ -348,7 +337,7 @@ struct ostream_params {
   int oflag = file::WRONLY | file::CREATE | file::TRUNC;
   size_t buffer_size = BUFSIZ > 32768 ? BUFSIZ : 32768;
 
-  ostream_params() {}
+  constexpr ostream_params() {}
 
   template <typename... T>
   ostream_params(T... params, int new_oflag) : ostream_params(params...) {
@@ -369,79 +358,62 @@ struct ostream_params {
 #  endif
 };
 
-class file_buffer final : public buffer<char> {
+}  // namespace detail
+
+FMT_INLINE_VARIABLE constexpr auto buffer_size = detail::buffer_size();
+
+/// A fast buffered output stream for writing from a single thread. Writing from
+/// multiple threads without external synchronization may result in a data race.
+class FMT_API ostream : private detail::buffer<char> {
+ private:
   file file_;
 
-  FMT_API void grow(size_t) override;
+  ostream(cstring_view path, const detail::ostream_params& params);
+
+  static void grow(buffer<char>& buf, size_t);
 
  public:
-  FMT_API file_buffer(cstring_view path, const ostream_params& params);
+  ostream(ostream&& other) noexcept;
-  FMT_API file_buffer(file_buffer&& other);
+  ~ostream();
-  FMT_API ~file_buffer();
 
-  void flush() {
+  operator writer() {
+    detail::buffer<char>& buf = *this;
+    return buf;
+  }
+
+  inline void flush() {
     if (size() == 0) return;
     file_.write(data(), size() * sizeof(data()[0]));
     clear();
   }
 
-  void close() {
-    flush();
-    file_.close();
-  }
-};
-
-}  // namespace detail
-
-// Added {} below to work around default constructor error known to
-// occur in Xcode versions 7.2.1 and 8.2.1.
-constexpr detail::buffer_size buffer_size{};
-
-/** A fast output stream which is not thread-safe. */
-class FMT_API ostream {
- private:
-  FMT_MSC_WARNING(suppress : 4251)
-  detail::file_buffer buffer_;
-
-  ostream(cstring_view path, const detail::ostream_params& params)
-      : buffer_(path, params) {}
-
- public:
-  ostream(ostream&& other) : buffer_(std::move(other.buffer_)) {}
-
-  ~ostream();
-
-  void flush() { buffer_.flush(); }
-
   template <typename... T>
   friend auto output_file(cstring_view path, T... params) -> ostream;
 
-  void close() { buffer_.close(); }
+  inline void close() {
+    flush();
+    file_.close();
+  }
 
-  /**
+  /// Formats `args` according to specifications in `fmt` and writes the
-    Formats ``args`` according to specifications in ``fmt`` and writes the
+  /// output to the file.
-    output to the file.
-   */
   template <typename... T> void print(format_string<T...> fmt, T&&... args) {
-    vformat_to(std::back_inserter(buffer_), fmt,
+    vformat_to(appender(*this), fmt.str, vargs<T...>{{args...}});
-               fmt::make_format_args(args...));
   }
 };
 
 /**
-  \rst
+ * Opens a file for writing. Supported parameters passed in `params`:
-  Opens a file for writing. Supported parameters passed in *params*:
+ *
-
+ * - `<integer>`: Flags passed to [open](
-  * ``<integer>``: Flags passed to `open
+ *   https://pubs.opengroup.org/onlinepubs/007904875/functions/open.html)
-    <https://pubs.opengroup.org/onlinepubs/007904875/functions/open.html>`_
+ *   (`file::WRONLY | file::CREATE | file::TRUNC` by default)
-    (``file::WRONLY | file::CREATE | file::TRUNC`` by default)
+ * - `buffer_size=<integer>`: Output buffer size
-  * ``buffer_size=<integer>``: Output buffer size
+ *
-
+ * **Example**:
-  **Example**::
+ *
-
+ *     auto out = fmt::output_file("guide.txt");
-    auto out = fmt::output_file("guide.txt");
+ *     out.print("Don't {}", "Panic");
-    out.print("Don't {}", "Panic");
-  \endrst
  */
 template <typename... T>
 inline auto output_file(cstring_view path, T... params) -> ostream {

3rdparty/fmt/include/fmt/ostream.h

@@ -8,7 +8,9 @@
 #ifndef FMT_OSTREAM_H_
 #define FMT_OSTREAM_H_
 
-#include <fstream>  // std::filebuf
+#ifndef FMT_MODULE
+#  include <fstream>  // std::filebuf
+#endif
 
 #ifdef _WIN32
 #  ifdef __GLIBCXX__
@@ -18,42 +20,19 @@
 #  include <io.h>
 #endif
 
-#include "format.h"
+#include "chrono.h"  // formatbuf
+
+#ifdef _MSVC_STL_UPDATE
+#  define FMT_MSVC_STL_UPDATE _MSVC_STL_UPDATE
+#elif defined(_MSC_VER) && _MSC_VER < 1912  // VS 15.5
+#  define FMT_MSVC_STL_UPDATE _MSVC_LANG
+#else
+#  define FMT_MSVC_STL_UPDATE 0
+#endif
 
 FMT_BEGIN_NAMESPACE
 namespace detail {
 
-template <typename Streambuf> class formatbuf : public Streambuf {
- private:
-  using char_type = typename Streambuf::char_type;
-  using streamsize = decltype(std::declval<Streambuf>().sputn(nullptr, 0));
-  using int_type = typename Streambuf::int_type;
-  using traits_type = typename Streambuf::traits_type;
-
-  buffer<char_type>& buffer_;
-
- public:
-  explicit formatbuf(buffer<char_type>& buf) : buffer_(buf) {}
-
- protected:
-  // The put area is always empty. This makes the implementation simpler and has
-  // the advantage that the streambuf and the buffer are always in sync and
-  // sputc never writes into uninitialized memory. A disadvantage is that each
-  // call to sputc always results in a (virtual) call to overflow. There is no
-  // disadvantage here for sputn since this always results in a call to xsputn.
-
-  auto overflow(int_type ch) -> int_type override {
-    if (!traits_type::eq_int_type(ch, traits_type::eof()))
-      buffer_.push_back(static_cast<char_type>(ch));
-    return ch;
-  }
-
-  auto xsputn(const char_type* s, streamsize count) -> streamsize override {
-    buffer_.append(s, s + count);
-    return count;
-  }
-};
-
 // Generate a unique explicit instantion in every translation unit using a tag
 // type in an anonymous namespace.
 namespace {
@@ -64,53 +43,18 @@ class file_access {
   friend auto get_file(BufType& obj) -> FILE* { return obj.*FileMemberPtr; }
 };
 
-#if FMT_MSC_VERSION
+#if FMT_MSVC_STL_UPDATE
 template class file_access<file_access_tag, std::filebuf,
                            &std::filebuf::_Myfile>;
 auto get_file(std::filebuf&) -> FILE*;
 #endif
 
-inline auto write_ostream_unicode(std::ostream& os, fmt::string_view data)
-    -> bool {
-  FILE* f = nullptr;
-#if FMT_MSC_VERSION && false
-  if (auto* buf = dynamic_cast<std::filebuf*>(os.rdbuf()))
-    f = get_file(*buf);
-  else
-    return false;
-#elif defined(_WIN32) && defined(__GLIBCXX__)
-  auto* rdbuf = os.rdbuf();
-  if (auto* sfbuf = dynamic_cast<__gnu_cxx::stdio_sync_filebuf<char>*>(rdbuf))
-    f = sfbuf->file();
-  else if (auto* fbuf = dynamic_cast<__gnu_cxx::stdio_filebuf<char>*>(rdbuf))
-    f = fbuf->file();
-  else
-    return false;
-#else
-  ignore_unused(os, data, f);
-#endif
-#ifdef _WIN32
-  if (f) {
-    int fd = _fileno(f);
-    if (_isatty(fd)) {
-      os.flush();
-      return write_console(fd, data);
-    }
-  }
-#endif
-  return false;
-}
-inline auto write_ostream_unicode(std::wostream&,
-                                  fmt::basic_string_view<wchar_t>) -> bool {
-  return false;
-}
-
 // Write the content of buf to os.
 // It is a separate function rather than a part of vprint to simplify testing.
 template <typename Char>
 void write_buffer(std::basic_ostream<Char>& os, buffer<Char>& buf) {
   const Char* buf_data = buf.data();
-  using unsigned_streamsize = std::make_unsigned<std::streamsize>::type;
+  using unsigned_streamsize = make_unsigned_t<std::streamsize>;
   unsigned_streamsize size = buf.size();
   unsigned_streamsize max_size = to_unsigned(max_value<std::streamsize>());
   do {
@@ -121,21 +65,9 @@ void write_buffer(std::basic_ostream<Char>& os, buffer<Char>& buf) {
   } while (size != 0);
 }
 
-template <typename Char, typename T>
-void format_value(buffer<Char>& buf, const T& value) {
-  auto&& format_buf = formatbuf<std::basic_streambuf<Char>>(buf);
-  auto&& output = std::basic_ostream<Char>(&format_buf);
-#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
-  output.imbue(std::locale::classic());  // The default is always unlocalized.
-#endif
-  output << value;
-  output.exceptions(std::ios_base::failbit | std::ios_base::badbit);
-}
-
 template <typename T> struct streamed_view {
   const T& value;
 };
-
 }  // namespace detail
 
 // Formats an object of type T that has an overloaded ostream operator<<.
@@ -143,11 +75,14 @@ template <typename Char>
 struct basic_ostream_formatter : formatter<basic_string_view<Char>, Char> {
   void set_debug_format() = delete;
 
-  template <typename T, typename OutputIt>
+  template <typename T, typename Context>
-  auto format(const T& value, basic_format_context<OutputIt, Char>& ctx) const
+  auto format(const T& value, Context& ctx) const -> decltype(ctx.out()) {
-      -> OutputIt {
     auto buffer = basic_memory_buffer<Char>();
-    detail::format_value(buffer, value);
+    auto&& formatbuf = detail::formatbuf<std::basic_streambuf<Char>>(buffer);
+    auto&& output = std::basic_ostream<Char>(&formatbuf);
+    output.imbue(std::locale::classic());  // The default is always unlocalized.
+    output << value;
+    output.exceptions(std::ios_base::failbit | std::ios_base::badbit);
     return formatter<basic_string_view<Char>, Char>::format(
         {buffer.data(), buffer.size()}, ctx);
   }
@@ -158,73 +93,67 @@ using ostream_formatter = basic_ostream_formatter<char>;
 template <typename T, typename Char>
 struct formatter<detail::streamed_view<T>, Char>
     : basic_ostream_formatter<Char> {
-  template <typename OutputIt>
+  template <typename Context>
-  auto format(detail::streamed_view<T> view,
+  auto format(detail::streamed_view<T> view, Context& ctx) const
-              basic_format_context<OutputIt, Char>& ctx) const -> OutputIt {
+      -> decltype(ctx.out()) {
     return basic_ostream_formatter<Char>::format(view.value, ctx);
   }
 };
 
 /**
-  \rst
+ * Returns a view that formats `value` via an ostream `operator<<`.
-  Returns a view that formats `value` via an ostream ``operator<<``.
+ *
-
+ * **Example**:
-  **Example**::
+ *
-
+ *     fmt::print("Current thread id: {}\n",
-    fmt::print("Current thread id: {}\n",
+ *                fmt::streamed(std::this_thread::get_id()));
-               fmt::streamed(std::this_thread::get_id()));
-  \endrst
  */
 template <typename T>
 constexpr auto streamed(const T& value) -> detail::streamed_view<T> {
   return {value};
 }
 
-namespace detail {
+inline void vprint(std::ostream& os, string_view fmt, format_args args) {
-
-inline void vprint_directly(std::ostream& os, string_view format_str,
-                            format_args args) {
   auto buffer = memory_buffer();
-  detail::vformat_to(buffer, format_str, args);
+  detail::vformat_to(buffer, fmt, args);
-  detail::write_buffer(os, buffer);
+  FILE* f = nullptr;
-}
+#if FMT_MSVC_STL_UPDATE && FMT_USE_RTTI
-
+  if (auto* buf = dynamic_cast<std::filebuf*>(os.rdbuf()))
-}  // namespace detail
+    f = detail::get_file(*buf);
-
+#elif defined(_WIN32) && defined(__GLIBCXX__) && FMT_USE_RTTI
-FMT_EXPORT template <typename Char>
+  auto* rdbuf = os.rdbuf();
-void vprint(std::basic_ostream<Char>& os,
+  if (auto* sfbuf = dynamic_cast<__gnu_cxx::stdio_sync_filebuf<char>*>(rdbuf))
-            basic_string_view<type_identity_t<Char>> format_str,
+    f = sfbuf->file();
-            basic_format_args<buffer_context<type_identity_t<Char>>> args) {
+  else if (auto* fbuf = dynamic_cast<__gnu_cxx::stdio_filebuf<char>*>(rdbuf))
-  auto buffer = basic_memory_buffer<Char>();
+    f = fbuf->file();
-  detail::vformat_to(buffer, format_str, args);
+#endif
-  if (detail::write_ostream_unicode(os, {buffer.data(), buffer.size()})) return;
+#ifdef _WIN32
+  if (f) {
+    int fd = _fileno(f);
+    if (_isatty(fd)) {
+      os.flush();
+      if (detail::write_console(fd, {buffer.data(), buffer.size()})) return;
+    }
+  }
+#endif
+  detail::ignore_unused(f);
   detail::write_buffer(os, buffer);
 }
 
 /**
-  \rst
+ * Prints formatted data to the stream `os`.
-  Prints formatted data to the stream *os*.
+ *
-
+ * **Example**:
-  **Example**::
+ *
-
+ *     fmt::print(cerr, "Don't {}!", "panic");
-    fmt::print(cerr, "Don't {}!", "panic");
-  \endrst
  */
 FMT_EXPORT template <typename... T>
 void print(std::ostream& os, format_string<T...> fmt, T&&... args) {
-  const auto& vargs = fmt::make_format_args(args...);
+  fmt::vargs<T...> vargs = {{args...}};
-  if (detail::is_utf8())
+  if (detail::use_utf8) return vprint(os, fmt.str, vargs);
-    vprint(os, fmt, vargs);
+  auto buffer = memory_buffer();
-  else
+  detail::vformat_to(buffer, fmt.str, vargs);
-    detail::vprint_directly(os, fmt, vargs);
+  detail::write_buffer(os, buffer);
-}
-
-FMT_EXPORT
-template <typename... Args>
-void print(std::wostream& os,
-           basic_format_string<wchar_t, type_identity_t<Args>...> fmt,
-           Args&&... args) {
-  vprint(os, fmt, fmt::make_format_args<buffer_context<wchar_t>>(args...));
 }
 
 FMT_EXPORT template <typename... T>
@@ -232,14 +161,6 @@ void println(std::ostream& os, format_string<T...> fmt, T&&... args) {
   fmt::print(os, "{}\n", fmt::format(fmt, std::forward<T>(args)...));
 }
 
-FMT_EXPORT
-template <typename... Args>
-void println(std::wostream& os,
-             basic_format_string<wchar_t, type_identity_t<Args>...> fmt,
-             Args&&... args) {
-  print(os, L"{}\n", fmt::format(fmt, std::forward<Args>(args)...));
-}
-
 FMT_END_NAMESPACE
 
 #endif  // FMT_OSTREAM_H_

3rdparty/fmt/include/fmt/printf.h

@@ -8,8 +8,10 @@
 #ifndef FMT_PRINTF_H_
 #define FMT_PRINTF_H_
 
-#include <algorithm>  // std::max
+#ifndef FMT_MODULE
-#include <limits>     // std::numeric_limits
+#  include <algorithm>  // std::max
+#  include <limits>     // std::numeric_limits
+#endif
 
 #include "format.h"
 
@@ -22,7 +24,7 @@ template <typename T> struct printf_formatter {
 
 template <typename Char> class basic_printf_context {
  private:
-  detail::buffer_appender<Char> out_;
+  basic_appender<Char> out_;
   basic_format_args<basic_printf_context> args_;
 
   static_assert(std::is_same<Char, char>::value ||
@@ -31,43 +33,53 @@ template <typename Char> class basic_printf_context {
 
  public:
   using char_type = Char;
-  using parse_context_type = basic_format_parse_context<Char>;
+  using parse_context_type = parse_context<Char>;
   template <typename T> using formatter_type = printf_formatter<T>;
+  enum { builtin_types = 1 };
 
-  /**
+  /// Constructs a `printf_context` object. References to the arguments are
-    \rst
+  /// stored in the context object so make sure they have appropriate lifetimes.
-    Constructs a ``printf_context`` object. References to the arguments are
+  basic_printf_context(basic_appender<Char> out,
-    stored in the context object so make sure they have appropriate lifetimes.
-    \endrst
-   */
-  basic_printf_context(detail::buffer_appender<Char> out,
                        basic_format_args<basic_printf_context> args)
       : out_(out), args_(args) {}
 
-  auto out() -> detail::buffer_appender<Char> { return out_; }
+  auto out() -> basic_appender<Char> { return out_; }
-  void advance_to(detail::buffer_appender<Char>) {}
+  void advance_to(basic_appender<Char>) {}
 
   auto locale() -> detail::locale_ref { return {}; }
 
   auto arg(int id) const -> basic_format_arg<basic_printf_context> {
     return args_.get(id);
   }
-
-  FMT_CONSTEXPR void on_error(const char* message) {
-    detail::error_handler().on_error(message);
-  }
 };
 
 namespace detail {
 
+// Return the result via the out param to workaround gcc bug 77539.
+template <bool IS_CONSTEXPR, typename T, typename Ptr = const T*>
+FMT_CONSTEXPR auto find(Ptr first, Ptr last, T value, Ptr& out) -> bool {
+  for (out = first; out != last; ++out) {
+    if (*out == value) return true;
+  }
+  return false;
+}
+
+template <>
+inline auto find<false, char>(const char* first, const char* last, char value,
+                              const char*& out) -> bool {
+  out =
+      static_cast<const char*>(memchr(first, value, to_unsigned(last - first)));
+  return out != nullptr;
+}
+
 // Checks if a value fits in int - used to avoid warnings about comparing
 // signed and unsigned integers.
 template <bool IsSigned> struct int_checker {
   template <typename T> static auto fits_in_int(T value) -> bool {
-    unsigned max = max_value<int>();
+    unsigned max = to_unsigned(max_value<int>());
     return value <= max;
   }
-  static auto fits_in_int(bool) -> bool { return true; }
+  inline static auto fits_in_int(bool) -> bool { return true; }
 };
 
 template <> struct int_checker<true> {
@@ -75,20 +87,20 @@ template <> struct int_checker<true> {
     return value >= (std::numeric_limits<int>::min)() &&
            value <= max_value<int>();
   }
-  static auto fits_in_int(int) -> bool { return true; }
+  inline static auto fits_in_int(int) -> bool { return true; }
 };
 
 struct printf_precision_handler {
   template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
   auto operator()(T value) -> int {
     if (!int_checker<std::numeric_limits<T>::is_signed>::fits_in_int(value))
-      throw_format_error("number is too big");
+      report_error("number is too big");
     return (std::max)(static_cast<int>(value), 0);
   }
 
   template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
   auto operator()(T) -> int {
-    throw_format_error("precision is not integer");
+    report_error("precision is not integer");
     return 0;
   }
 };
@@ -133,25 +145,19 @@ template <typename T, typename Context> class arg_converter {
     using target_type = conditional_t<std::is_same<T, void>::value, U, T>;
     if (const_check(sizeof(target_type) <= sizeof(int))) {
       // Extra casts are used to silence warnings.
-      if (is_signed) {
+      using unsigned_type = typename make_unsigned_or_bool<target_type>::type;
-        auto n = static_cast<int>(static_cast<target_type>(value));
+      if (is_signed)
-        arg_ = detail::make_arg<Context>(n);
+        arg_ = static_cast<int>(static_cast<target_type>(value));
-      } else {
+      else
-        using unsigned_type = typename make_unsigned_or_bool<target_type>::type;
+        arg_ = static_cast<unsigned>(static_cast<unsigned_type>(value));
-        auto n = static_cast<unsigned>(static_cast<unsigned_type>(value));
-        arg_ = detail::make_arg<Context>(n);
-      }
     } else {
-      if (is_signed) {
+      // glibc's printf doesn't sign extend arguments of smaller types:
-        // glibc's printf doesn't sign extend arguments of smaller types:
+      //   std::printf("%lld", -42);  // prints "4294967254"
-        //   std::printf("%lld", -42);  // prints "4294967254"
+      // but we don't have to do the same because it's a UB.
-        // but we don't have to do the same because it's a UB.
+      if (is_signed)
-        auto n = static_cast<long long>(value);
+        arg_ = static_cast<long long>(value);
-        arg_ = detail::make_arg<Context>(n);
+      else
-      } else {
+        arg_ = static_cast<typename make_unsigned_or_bool<U>::type>(value);
-        auto n = static_cast<typename make_unsigned_or_bool<U>::type>(value);
-        arg_ = detail::make_arg<Context>(n);
-      }
     }
   }
 
@@ -165,7 +171,7 @@ template <typename T, typename Context> class arg_converter {
 // unsigned).
 template <typename T, typename Context, typename Char>
 void convert_arg(basic_format_arg<Context>& arg, Char type) {
-  visit_format_arg(arg_converter<T, Context>(arg, type), arg);
+  arg.visit(arg_converter<T, Context>(arg, type));
 }
 
 // Converts an integer argument to char for printf.
@@ -178,8 +184,7 @@ template <typename Context> class char_converter {
 
   template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
   void operator()(T value) {
-    auto c = static_cast<typename Context::char_type>(value);
+    arg_ = static_cast<typename Context::char_type>(value);
-    arg_ = detail::make_arg<Context>(c);
   }
 
   template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
@@ -195,28 +200,28 @@ template <typename Char> struct get_cstring {
 
 // Checks if an argument is a valid printf width specifier and sets
 // left alignment if it is negative.
-template <typename Char> class printf_width_handler {
+class printf_width_handler {
  private:
-  format_specs<Char>& specs_;
+  format_specs& specs_;
 
  public:
-  explicit printf_width_handler(format_specs<Char>& specs) : specs_(specs) {}
+  inline explicit printf_width_handler(format_specs& specs) : specs_(specs) {}
 
   template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
   auto operator()(T value) -> unsigned {
     auto width = static_cast<uint32_or_64_or_128_t<T>>(value);
     if (detail::is_negative(value)) {
-      specs_.align = align::left;
+      specs_.set_align(align::left);
       width = 0 - width;
     }
-    unsigned int_max = max_value<int>();
+    unsigned int_max = to_unsigned(max_value<int>());
-    if (width > int_max) throw_format_error("number is too big");
+    if (width > int_max) report_error("number is too big");
     return static_cast<unsigned>(width);
   }
 
   template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
   auto operator()(T) -> unsigned {
-    throw_format_error("width is not integer");
+    report_error("width is not integer");
     return 0;
   }
 };
@@ -224,12 +229,12 @@ template <typename Char> class printf_width_handler {
 // Workaround for a bug with the XL compiler when initializing
 // printf_arg_formatter's base class.
 template <typename Char>
-auto make_arg_formatter(buffer_appender<Char> iter, format_specs<Char>& s)
+auto make_arg_formatter(basic_appender<Char> iter, format_specs& s)
     -> arg_formatter<Char> {
   return {iter, s, locale_ref()};
 }
 
-// The ``printf`` argument formatter.
+// The `printf` argument formatter.
 template <typename Char>
 class printf_arg_formatter : public arg_formatter<Char> {
  private:
@@ -240,105 +245,96 @@ class printf_arg_formatter : public arg_formatter<Char> {
 
   void write_null_pointer(bool is_string = false) {
     auto s = this->specs;
-    s.type = presentation_type::none;
+    s.set_type(presentation_type::none);
-    write_bytes(this->out, is_string ? "(null)" : "(nil)", s);
+    write_bytes<Char>(this->out, is_string ? "(null)" : "(nil)", s);
+  }
+
+  template <typename T> void write(T value) {
+    detail::write<Char>(this->out, value, this->specs, this->locale);
   }
 
  public:
-  printf_arg_formatter(buffer_appender<Char> iter, format_specs<Char>& s,
+  printf_arg_formatter(basic_appender<Char> iter, format_specs& s,
                        context_type& ctx)
       : base(make_arg_formatter(iter, s)), context_(ctx) {}
 
-  void operator()(monostate value) { base::operator()(value); }
+  void operator()(monostate value) { write(value); }
 
   template <typename T, FMT_ENABLE_IF(detail::is_integral<T>::value)>
   void operator()(T value) {
     // MSVC2013 fails to compile separate overloads for bool and Char so use
     // std::is_same instead.
     if (!std::is_same<T, Char>::value) {
-      base::operator()(value);
+      write(value);
       return;
     }
-    format_specs<Char> fmt_specs = this->specs;
+    format_specs s = this->specs;
-    if (fmt_specs.type != presentation_type::none &&
+    if (s.type() != presentation_type::none &&
-        fmt_specs.type != presentation_type::chr) {
+        s.type() != presentation_type::chr) {
       return (*this)(static_cast<int>(value));
     }
-    fmt_specs.sign = sign::none;
+    s.set_sign(sign::none);
-    fmt_specs.alt = false;
+    s.clear_alt();
-    fmt_specs.fill[0] = ' ';  // Ignore '0' flag for char types.
+    s.set_fill(' ');  // Ignore '0' flag for char types.
     // align::numeric needs to be overwritten here since the '0' flag is
     // ignored for non-numeric types
-    if (fmt_specs.align == align::none || fmt_specs.align == align::numeric)
+    if (s.align() == align::none || s.align() == align::numeric)
-      fmt_specs.align = align::right;
+      s.set_align(align::right);
-    write<Char>(this->out, static_cast<Char>(value), fmt_specs);
+    detail::write<Char>(this->out, static_cast<Char>(value), s);
   }
 
   template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
   void operator()(T value) {
-    base::operator()(value);
+    write(value);
   }
 
-  /** Formats a null-terminated C string. */
   void operator()(const char* value) {
     if (value)
-      base::operator()(value);
+      write(value);
     else
-      write_null_pointer(this->specs.type != presentation_type::pointer);
+      write_null_pointer(this->specs.type() != presentation_type::pointer);
   }
 
-  /** Formats a null-terminated wide C string. */
   void operator()(const wchar_t* value) {
     if (value)
-      base::operator()(value);
+      write(value);
     else
-      write_null_pointer(this->specs.type != presentation_type::pointer);
+      write_null_pointer(this->specs.type() != presentation_type::pointer);
   }
 
-  void operator()(basic_string_view<Char> value) { base::operator()(value); }
+  void operator()(basic_string_view<Char> value) { write(value); }
 
-  /** Formats a pointer. */
   void operator()(const void* value) {
     if (value)
-      base::operator()(value);
+      write(value);
     else
       write_null_pointer();
   }
 
-  /** Formats an argument of a custom (user-defined) type. */
   void operator()(typename basic_format_arg<context_type>::handle handle) {
-    auto parse_ctx = basic_format_parse_context<Char>({});
+    auto parse_ctx = parse_context<Char>({});
     handle.format(parse_ctx, context_);
   }
 };
 
 template <typename Char>
-void parse_flags(format_specs<Char>& specs, const Char*& it, const Char* end) {
+void parse_flags(format_specs& specs, const Char*& it, const Char* end) {
   for (; it != end; ++it) {
     switch (*it) {
-    case '-':
+    case '-': specs.set_align(align::left); break;
-      specs.align = align::left;
+    case '+': specs.set_sign(sign::plus); break;
-      break;
+    case '0': specs.set_fill('0'); break;
-    case '+':
-      specs.sign = sign::plus;
-      break;
-    case '0':
-      specs.fill[0] = '0';
-      break;
     case ' ':
-      if (specs.sign != sign::plus) specs.sign = sign::space;
+      if (specs.sign() != sign::plus) specs.set_sign(sign::space);
       break;
-    case '#':
+    case '#': specs.set_alt(); break;
-      specs.alt = true;
+    default:  return;
-      break;
-    default:
-      return;
     }
   }
 }
 
 template <typename Char, typename GetArg>
-auto parse_header(const Char*& it, const Char* end, format_specs<Char>& specs,
+auto parse_header(const Char*& it, const Char* end, format_specs& specs,
                   GetArg get_arg) -> int {
   int arg_index = -1;
   Char c = *it;
@@ -350,11 +346,11 @@ auto parse_header(const Char*& it, const Char* end, format_specs<Char>& specs,
       ++it;
       arg_index = value != -1 ? value : max_value<int>();
     } else {
-      if (c == '0') specs.fill[0] = '0';
+      if (c == '0') specs.set_fill('0');
       if (value != 0) {
         // Nonzero value means that we parsed width and don't need to
         // parse it or flags again, so return now.
-        if (value == -1) throw_format_error("number is too big");
+        if (value == -1) report_error("number is too big");
         specs.width = value;
         return arg_index;
       }
@@ -365,63 +361,47 @@ auto parse_header(const Char*& it, const Char* end, format_specs<Char>& specs,
   if (it != end) {
     if (*it >= '0' && *it <= '9') {
       specs.width = parse_nonnegative_int(it, end, -1);
-      if (specs.width == -1) throw_format_error("number is too big");
+      if (specs.width == -1) report_error("number is too big");
     } else if (*it == '*') {
       ++it;
-      specs.width = static_cast<int>(visit_format_arg(
+      specs.width = static_cast<int>(
-          detail::printf_width_handler<Char>(specs), get_arg(-1)));
+          get_arg(-1).visit(detail::printf_width_handler(specs)));
     }
   }
   return arg_index;
 }
 
-inline auto parse_printf_presentation_type(char c, type t)
+inline auto parse_printf_presentation_type(char c, type t, bool& upper)
     -> presentation_type {
   using pt = presentation_type;
   constexpr auto integral_set = sint_set | uint_set | bool_set | char_set;
   switch (c) {
-  case 'd':
+  case 'd': return in(t, integral_set) ? pt::dec : pt::none;
-    return in(t, integral_set) ? pt::dec : pt::none;
+  case 'o': return in(t, integral_set) ? pt::oct : pt::none;
-  case 'o':
+  case 'X': upper = true; FMT_FALLTHROUGH;
-    return in(t, integral_set) ? pt::oct : pt::none;
+  case 'x': return in(t, integral_set) ? pt::hex : pt::none;
-  case 'x':
+  case 'E': upper = true; FMT_FALLTHROUGH;
-    return in(t, integral_set) ? pt::hex_lower : pt::none;
+  case 'e': return in(t, float_set) ? pt::exp : pt::none;
-  case 'X':
+  case 'F': upper = true; FMT_FALLTHROUGH;
-    return in(t, integral_set) ? pt::hex_upper : pt::none;
+  case 'f': return in(t, float_set) ? pt::fixed : pt::none;
-  case 'a':
+  case 'G': upper = true; FMT_FALLTHROUGH;
-    return in(t, float_set) ? pt::hexfloat_lower : pt::none;
+  case 'g': return in(t, float_set) ? pt::general : pt::none;
-  case 'A':
+  case 'A': upper = true; FMT_FALLTHROUGH;
-    return in(t, float_set) ? pt::hexfloat_upper : pt::none;
+  case 'a': return in(t, float_set) ? pt::hexfloat : pt::none;
-  case 'e':
+  case 'c': return in(t, integral_set) ? pt::chr : pt::none;
-    return in(t, float_set) ? pt::exp_lower : pt::none;
+  case 's': return in(t, string_set | cstring_set) ? pt::string : pt::none;
-  case 'E':
+  case 'p': return in(t, pointer_set | cstring_set) ? pt::pointer : pt::none;
-    return in(t, float_set) ? pt::exp_upper : pt::none;
+  default:  return pt::none;
-  case 'f':
-    return in(t, float_set) ? pt::fixed_lower : pt::none;
-  case 'F':
-    return in(t, float_set) ? pt::fixed_upper : pt::none;
-  case 'g':
-    return in(t, float_set) ? pt::general_lower : pt::none;
-  case 'G':
-    return in(t, float_set) ? pt::general_upper : pt::none;
-  case 'c':
-    return in(t, integral_set) ? pt::chr : pt::none;
-  case 's':
-    return in(t, string_set | cstring_set) ? pt::string : pt::none;
-  case 'p':
-    return in(t, pointer_set | cstring_set) ? pt::pointer : pt::none;
-  default:
-    return pt::none;
   }
 }
 
 template <typename Char, typename Context>
 void vprintf(buffer<Char>& buf, basic_string_view<Char> format,
              basic_format_args<Context> args) {
-  using iterator = buffer_appender<Char>;
+  using iterator = basic_appender<Char>;
   auto out = iterator(buf);
   auto context = basic_printf_context<Char>(out, args);
-  auto parse_ctx = basic_format_parse_context<Char>(format);
+  auto parse_ctx = parse_context<Char>(format);
 
   // Returns the argument with specified index or, if arg_index is -1, the next
   // argument.
@@ -449,12 +429,12 @@ void vprintf(buffer<Char>& buf, basic_string_view<Char> format,
     }
     write(out, basic_string_view<Char>(start, to_unsigned(it - 1 - start)));
 
-    auto specs = format_specs<Char>();
+    auto specs = format_specs();
-    specs.align = align::right;
+    specs.set_align(align::right);
 
     // Parse argument index, flags and width.
     int arg_index = parse_header(it, end, specs, get_arg);
-    if (arg_index == 0) throw_format_error("argument not found");
+    if (arg_index == 0) report_error("argument not found");
 
     // Parse precision.
     if (it != end && *it == '.') {
@@ -464,8 +444,8 @@ void vprintf(buffer<Char>& buf, basic_string_view<Char> format,
         specs.precision = parse_nonnegative_int(it, end, 0);
       } else if (c == '*') {
         ++it;
-        specs.precision = static_cast<int>(
+        specs.precision =
-            visit_format_arg(printf_precision_handler(), get_arg(-1)));
+            static_cast<int>(get_arg(-1).visit(printf_precision_handler()));
       } else {
         specs.precision = 0;
       }
@@ -474,25 +454,26 @@ void vprintf(buffer<Char>& buf, basic_string_view<Char> format,
     auto arg = get_arg(arg_index);
     // For d, i, o, u, x, and X conversion specifiers, if a precision is
     // specified, the '0' flag is ignored
-    if (specs.precision >= 0 && arg.is_integral()) {
+    if (specs.precision >= 0 && is_integral_type(arg.type())) {
       // Ignore '0' for non-numeric types or if '-' present.
-      specs.fill[0] = ' ';
+      specs.set_fill(' ');
     }
     if (specs.precision >= 0 && arg.type() == type::cstring_type) {
-      auto str = visit_format_arg(get_cstring<Char>(), arg);
+      auto str = arg.visit(get_cstring<Char>());
       auto str_end = str + specs.precision;
       auto nul = std::find(str, str_end, Char());
       auto sv = basic_string_view<Char>(
           str, to_unsigned(nul != str_end ? nul - str : specs.precision));
-      arg = make_arg<basic_printf_context<Char>>(sv);
+      arg = sv;
     }
-    if (specs.alt && visit_format_arg(is_zero_int(), arg)) specs.alt = false;
+    if (specs.alt() && arg.visit(is_zero_int())) specs.clear_alt();
-    if (specs.fill[0] == '0') {
+    if (specs.fill_unit<Char>() == '0') {
-      if (arg.is_arithmetic() && specs.align != align::left)
+      if (is_arithmetic_type(arg.type()) && specs.align() != align::left) {
-        specs.align = align::numeric;
+        specs.set_align(align::numeric);
-      else
+      } else {
-        specs.fill[0] = ' ';  // Ignore '0' flag for non-numeric types or if '-'
+        // Ignore '0' flag for non-numeric types or if '-' flag is also present.
-                              // flag is also present.
+        specs.set_fill(' ');
+      }
     }
 
     // Parse length and convert the argument to the required type.
@@ -517,47 +498,39 @@ void vprintf(buffer<Char>& buf, basic_string_view<Char> format,
         convert_arg<long>(arg, t);
       }
       break;
-    case 'j':
+    case 'j': convert_arg<intmax_t>(arg, t); break;
-      convert_arg<intmax_t>(arg, t);
+    case 'z': convert_arg<size_t>(arg, t); break;
-      break;
+    case 't': convert_arg<std::ptrdiff_t>(arg, t); break;
-    case 'z':
-      convert_arg<size_t>(arg, t);
-      break;
-    case 't':
-      convert_arg<std::ptrdiff_t>(arg, t);
-      break;
     case 'L':
       // printf produces garbage when 'L' is omitted for long double, no
       // need to do the same.
       break;
-    default:
+    default: --it; convert_arg<void>(arg, c);
-      --it;
-      convert_arg<void>(arg, c);
     }
 
     // Parse type.
-    if (it == end) throw_format_error("invalid format string");
+    if (it == end) report_error("invalid format string");
     char type = static_cast<char>(*it++);
-    if (arg.is_integral()) {
+    if (is_integral_type(arg.type())) {
       // Normalize type.
       switch (type) {
       case 'i':
-      case 'u':
+      case 'u': type = 'd'; break;
-        type = 'd';
-        break;
       case 'c':
-        visit_format_arg(char_converter<basic_printf_context<Char>>(arg), arg);
+        arg.visit(char_converter<basic_printf_context<Char>>(arg));
         break;
       }
     }
-    specs.type = parse_printf_presentation_type(type, arg.type());
+    bool upper = false;
-    if (specs.type == presentation_type::none)
+    specs.set_type(parse_printf_presentation_type(type, arg.type(), upper));
-      throw_format_error("invalid format specifier");
+    if (specs.type() == presentation_type::none)
+      report_error("invalid format specifier");
+    if (upper) specs.set_upper();
 
     start = it;
 
     // Format argument.
-    visit_format_arg(printf_arg_formatter<Char>(out, specs, context), arg);
+    arg.visit(printf_arg_formatter<Char>(out, specs, context));
   }
   write(out, basic_string_view<Char>(start, to_unsigned(it - start)));
 }
@@ -569,56 +542,44 @@ using wprintf_context = basic_printf_context<wchar_t>;
 using printf_args = basic_format_args<printf_context>;
 using wprintf_args = basic_format_args<wprintf_context>;
 
-/**
+/// Constructs an `format_arg_store` object that contains references to
-  \rst
+/// arguments and can be implicitly converted to `printf_args`.
-  Constructs an `~fmt::format_arg_store` object that contains references to
+template <typename Char = char, typename... T>
-  arguments and can be implicitly converted to `~fmt::printf_args`.
+inline auto make_printf_args(T&... args)
-  \endrst
+    -> decltype(fmt::make_format_args<basic_printf_context<Char>>(args...)) {
- */
+  return fmt::make_format_args<basic_printf_context<Char>>(args...);
-template <typename... T>
-inline auto make_printf_args(const T&... args)
-    -> format_arg_store<printf_context, T...> {
-  return {args...};
 }
 
-// DEPRECATED!
+template <typename Char> struct vprintf_args {
-template <typename... T>
+  using type = basic_format_args<basic_printf_context<Char>>;
-inline auto make_wprintf_args(const T&... args)
+};
-    -> format_arg_store<wprintf_context, T...> {
-  return {args...};
-}
 
 template <typename Char>
-inline auto vsprintf(
+inline auto vsprintf(basic_string_view<Char> fmt,
-    basic_string_view<Char> fmt,
+                     typename vprintf_args<Char>::type args)
-    basic_format_args<basic_printf_context<type_identity_t<Char>>> args)
     -> std::basic_string<Char> {
   auto buf = basic_memory_buffer<Char>();
   detail::vprintf(buf, fmt, args);
-  return to_string(buf);
+  return {buf.data(), buf.size()};
 }
 
 /**
-  \rst
+ * Formats `args` according to specifications in `fmt` and returns the result
-  Formats arguments and returns the result as a string.
+ * as as string.
-
+ *
-  **Example**::
+ * **Example**:
-
+ *
-    std::string message = fmt::sprintf("The answer is %d", 42);
+ *     std::string message = fmt::sprintf("The answer is %d", 42);
-  \endrst
+ */
-*/
+template <typename S, typename... T, typename Char = detail::char_t<S>>
-template <typename S, typename... T,
-          typename Char = enable_if_t<detail::is_string<S>::value, char_t<S>>>
 inline auto sprintf(const S& fmt, const T&... args) -> std::basic_string<Char> {
   return vsprintf(detail::to_string_view(fmt),
                   fmt::make_format_args<basic_printf_context<Char>>(args...));
 }
 
 template <typename Char>
-inline auto vfprintf(
+inline auto vfprintf(std::FILE* f, basic_string_view<Char> fmt,
-    std::FILE* f, basic_string_view<Char> fmt,
+                     typename vprintf_args<Char>::type args) -> int {
-    basic_format_args<basic_printf_context<type_identity_t<Char>>> args)
-    -> int {
   auto buf = basic_memory_buffer<Char>();
   detail::vprintf(buf, fmt, args);
   size_t size = buf.size();
@@ -628,36 +589,33 @@ inline auto vfprintf(
 }
 
 /**
-  \rst
+ * Formats `args` according to specifications in `fmt` and writes the output
-  Prints formatted data to the file *f*.
+ * to `f`.
-
+ *
-  **Example**::
+ * **Example**:
-
+ *
-    fmt::fprintf(stderr, "Don't %s!", "panic");
+ *     fmt::fprintf(stderr, "Don't %s!", "panic");
-  \endrst
  */
-template <typename S, typename... T, typename Char = char_t<S>>
+template <typename S, typename... T, typename Char = detail::char_t<S>>
 inline auto fprintf(std::FILE* f, const S& fmt, const T&... args) -> int {
   return vfprintf(f, detail::to_string_view(fmt),
-                  fmt::make_format_args<basic_printf_context<Char>>(args...));
+                  make_printf_args<Char>(args...));
 }
 
 template <typename Char>
-FMT_DEPRECATED inline auto vprintf(
+FMT_DEPRECATED inline auto vprintf(basic_string_view<Char> fmt,
-    basic_string_view<Char> fmt,
+                                   typename vprintf_args<Char>::type args)
-    basic_format_args<basic_printf_context<type_identity_t<Char>>> args)
     -> int {
   return vfprintf(stdout, fmt, args);
 }
 
 /**
-  \rst
+ * Formats `args` according to specifications in `fmt` and writes the output
-  Prints formatted data to ``stdout``.
+ * to `stdout`.
-
+ *
-  **Example**::
+ * **Example**:
-
+ *
-    fmt::printf("Elapsed time: %.2f seconds", 1.23);
+ *   fmt::printf("Elapsed time: %.2f seconds", 1.23);
-  \endrst
  */
 template <typename... T>
 inline auto printf(string_view fmt, const T&... args) -> int {
@@ -666,7 +624,7 @@ inline auto printf(string_view fmt, const T&... args) -> int {
 template <typename... T>
 FMT_DEPRECATED inline auto printf(basic_string_view<wchar_t> fmt,
                                   const T&... args) -> int {
-  return vfprintf(stdout, fmt, make_wprintf_args(args...));
+  return vfprintf(stdout, fmt, make_printf_args<wchar_t>(args...));
 }
 
 FMT_END_EXPORT

3rdparty/fmt/include/fmt/ranges.h

@@ -8,67 +8,31 @@
 #ifndef FMT_RANGES_H_
 #define FMT_RANGES_H_
 
-#include <initializer_list>
+#ifndef FMT_MODULE
-#include <tuple>
+#  include <initializer_list>
-#include <type_traits>
+#  include <iterator>
+#  include <string>
+#  include <tuple>
+#  include <type_traits>
+#  include <utility>
+#endif
 
 #include "format.h"
 
 FMT_BEGIN_NAMESPACE
 
+FMT_EXPORT
+enum class range_format { disabled, map, set, sequence, string, debug_string };
+
 namespace detail {
 
-template <typename Range, typename OutputIt>
-auto copy(const Range& range, OutputIt out) -> OutputIt {
-  for (auto it = range.begin(), end = range.end(); it != end; ++it)
-    *out++ = *it;
-  return out;
-}
-
-template <typename OutputIt>
-auto copy(const char* str, OutputIt out) -> OutputIt {
-  while (*str) *out++ = *str++;
-  return out;
-}
-
-template <typename OutputIt> auto copy(char ch, OutputIt out) -> OutputIt {
-  *out++ = ch;
-  return out;
-}
-
-template <typename OutputIt> auto copy(wchar_t ch, OutputIt out) -> OutputIt {
-  *out++ = ch;
-  return out;
-}
-
-// Returns true if T has a std::string-like interface, like std::string_view.
-template <typename T> class is_std_string_like {
-  template <typename U>
-  static auto check(U* p)
-      -> decltype((void)p->find('a'), p->length(), (void)p->data(), int());
-  template <typename> static void check(...);
-
- public:
-  static constexpr const bool value =
-      is_string<T>::value ||
-      std::is_convertible<T, std_string_view<char>>::value ||
-      !std::is_void<decltype(check<T>(nullptr))>::value;
-};
-
-template <typename Char>
-struct is_std_string_like<fmt::basic_string_view<Char>> : std::true_type {};
-
 template <typename T> class is_map {
   template <typename U> static auto check(U*) -> typename U::mapped_type;
   template <typename> static void check(...);
 
  public:
-#ifdef FMT_FORMAT_MAP_AS_LIST  // DEPRECATED!
-  static constexpr const bool value = false;
-#else
   static constexpr const bool value =
       !std::is_void<decltype(check<T>(nullptr))>::value;
-#endif
 };
 
 template <typename T> class is_set {
@@ -76,26 +40,10 @@ template <typename T> class is_set {
   template <typename> static void check(...);
 
  public:
-#ifdef FMT_FORMAT_SET_AS_LIST  // DEPRECATED!
-  static constexpr const bool value = false;
-#else
   static constexpr const bool value =
       !std::is_void<decltype(check<T>(nullptr))>::value && !is_map<T>::value;
-#endif
 };
 
-template <typename... Ts> struct conditional_helper {};
-
-template <typename T, typename _ = void> struct is_range_ : std::false_type {};
-
-#if !FMT_MSC_VERSION || FMT_MSC_VERSION > 1800
-
-#  define FMT_DECLTYPE_RETURN(val)  \
-    ->decltype(val) { return val; } \
-    static_assert(                  \
-        true, "")  // This makes it so that a semicolon is required after the
-                   // macro, which helps clang-format handle the formatting.
-
 // C array overload
 template <typename T, std::size_t N>
 auto range_begin(const T (&arr)[N]) -> const T* {
@@ -110,17 +58,21 @@ template <typename T, typename Enable = void>
 struct has_member_fn_begin_end_t : std::false_type {};
 
 template <typename T>
-struct has_member_fn_begin_end_t<T, void_t<decltype(std::declval<T>().begin()),
+struct has_member_fn_begin_end_t<T, void_t<decltype(*std::declval<T>().begin()),
                                            decltype(std::declval<T>().end())>>
     : std::true_type {};
 
-// Member function overload
+// Member function overloads.
 template <typename T>
-auto range_begin(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).begin());
+auto range_begin(T&& rng) -> decltype(static_cast<T&&>(rng).begin()) {
+  return static_cast<T&&>(rng).begin();
+}
 template <typename T>
-auto range_end(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).end());
+auto range_end(T&& rng) -> decltype(static_cast<T&&>(rng).end()) {
+  return static_cast<T&&>(rng).end();
+}
 
-// ADL overload. Only participates in overload resolution if member functions
+// ADL overloads. Only participate in overload resolution if member functions
 // are not found.
 template <typename T>
 auto range_begin(T&& rng)
@@ -141,31 +93,30 @@ struct has_mutable_begin_end : std::false_type {};
 
 template <typename T>
 struct has_const_begin_end<
-    T,
+    T, void_t<decltype(*detail::range_begin(
-    void_t<
+                  std::declval<const remove_cvref_t<T>&>())),
-        decltype(detail::range_begin(std::declval<const remove_cvref_t<T>&>())),
+              decltype(detail::range_end(
-        decltype(detail::range_end(std::declval<const remove_cvref_t<T>&>()))>>
+                  std::declval<const remove_cvref_t<T>&>()))>>
     : std::true_type {};
 
 template <typename T>
 struct has_mutable_begin_end<
-    T, void_t<decltype(detail::range_begin(std::declval<T>())),
+    T, void_t<decltype(*detail::range_begin(std::declval<T&>())),
-              decltype(detail::range_end(std::declval<T>())),
+              decltype(detail::range_end(std::declval<T&>())),
               // the extra int here is because older versions of MSVC don't
               // SFINAE properly unless there are distinct types
               int>> : std::true_type {};
 
+template <typename T, typename _ = void> struct is_range_ : std::false_type {};
 template <typename T>
 struct is_range_<T, void>
     : std::integral_constant<bool, (has_const_begin_end<T>::value ||
                                     has_mutable_begin_end<T>::value)> {};
-#  undef FMT_DECLTYPE_RETURN
-#endif
 
 // tuple_size and tuple_element check.
 template <typename T> class is_tuple_like_ {
-  template <typename U>
+  template <typename U, typename V = typename std::remove_cv<U>::type>
-  static auto check(U* p) -> decltype(std::tuple_size<U>::value, int());
+  static auto check(U* p) -> decltype(std::tuple_size<V>::value, 0);
   template <typename> static void check(...);
 
  public:
@@ -206,12 +157,13 @@ class is_tuple_formattable_ {
   static constexpr const bool value = false;
 };
 template <typename T, typename C> class is_tuple_formattable_<T, C, true> {
-  template <std::size_t... Is>
+  template <size_t... Is>
-  static auto check2(index_sequence<Is...>,
+  static auto all_true(index_sequence<Is...>,
-                     integer_sequence<bool, (Is == Is)...>) -> std::true_type;
+                       integer_sequence<bool, (Is >= 0)...>) -> std::true_type;
-  static auto check2(...) -> std::false_type;
+  static auto all_true(...) -> std::false_type;
-  template <std::size_t... Is>
+
-  static auto check(index_sequence<Is...>) -> decltype(check2(
+  template <size_t... Is>
+  static auto check(index_sequence<Is...>) -> decltype(all_true(
       index_sequence<Is...>{},
       integer_sequence<bool,
                        (is_formattable<typename std::tuple_element<Is, T>::type,
@@ -292,21 +244,32 @@ FMT_CONSTEXPR auto maybe_set_debug_format(Formatter& f, bool set)
 template <typename Formatter>
 FMT_CONSTEXPR void maybe_set_debug_format(Formatter&, ...) {}
 
+template <typename T>
+struct range_format_kind_
+    : std::integral_constant<range_format,
+                             std::is_same<uncvref_type<T>, T>::value
+                                 ? range_format::disabled
+                             : is_map<T>::value ? range_format::map
+                             : is_set<T>::value ? range_format::set
+                                                : range_format::sequence> {};
+
+template <range_format K>
+using range_format_constant = std::integral_constant<range_format, K>;
+
 // These are not generic lambdas for compatibility with C++11.
-template <typename ParseContext> struct parse_empty_specs {
+template <typename Char> struct parse_empty_specs {
   template <typename Formatter> FMT_CONSTEXPR void operator()(Formatter& f) {
     f.parse(ctx);
     detail::maybe_set_debug_format(f, true);
   }
-  ParseContext& ctx;
+  parse_context<Char>& ctx;
 };
 template <typename FormatContext> struct format_tuple_element {
   using char_type = typename FormatContext::char_type;
 
   template <typename T>
   void operator()(const formatter<T, char_type>& f, const T& v) {
-    if (i > 0)
+    if (i > 0) ctx.advance_to(detail::copy<char_type>(separator, ctx.out()));
-      ctx.advance_to(detail::copy_str<char_type>(separator, ctx.out()));
     ctx.advance_to(f.format(v, ctx));
     ++i;
   }
@@ -355,66 +318,48 @@ struct formatter<Tuple, Char,
     closing_bracket_ = close;
   }
 
-  template <typename ParseContext>
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
-  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
     auto it = ctx.begin();
-    if (it != ctx.end() && *it != '}')
+    auto end = ctx.end();
-      FMT_THROW(format_error("invalid format specifier"));
+    if (it != end && detail::to_ascii(*it) == 'n') {
-    detail::for_each(formatters_, detail::parse_empty_specs<ParseContext>{ctx});
+      ++it;
+      set_brackets({}, {});
+      set_separator({});
+    }
+    if (it != end && *it != '}') report_error("invalid format specifier");
+    ctx.advance_to(it);
+    detail::for_each(formatters_, detail::parse_empty_specs<Char>{ctx});
     return it;
   }
 
   template <typename FormatContext>
   auto format(const Tuple& value, FormatContext& ctx) const
       -> decltype(ctx.out()) {
-    ctx.advance_to(detail::copy_str<Char>(opening_bracket_, ctx.out()));
+    ctx.advance_to(detail::copy<Char>(opening_bracket_, ctx.out()));
     detail::for_each2(
         formatters_, value,
         detail::format_tuple_element<FormatContext>{0, ctx, separator_});
-    return detail::copy_str<Char>(closing_bracket_, ctx.out());
+    return detail::copy<Char>(closing_bracket_, ctx.out());
   }
 };
 
 template <typename T, typename Char> struct is_range {
   static constexpr const bool value =
-      detail::is_range_<T>::value && !detail::is_std_string_like<T>::value &&
+      detail::is_range_<T>::value && !detail::has_to_string_view<T>::value;
-      !std::is_convertible<T, std::basic_string<Char>>::value &&
-      !std::is_convertible<T, detail::std_string_view<Char>>::value;
 };
 
 namespace detail {
-template <typename Context> struct range_mapper {
-  using mapper = arg_mapper<Context>;
-
-  template <typename T,
-            FMT_ENABLE_IF(has_formatter<remove_cvref_t<T>, Context>::value)>
-  static auto map(T&& value) -> T&& {
-    return static_cast<T&&>(value);
-  }
-  template <typename T,
-            FMT_ENABLE_IF(!has_formatter<remove_cvref_t<T>, Context>::value)>
-  static auto map(T&& value)
-      -> decltype(mapper().map(static_cast<T&&>(value))) {
-    return mapper().map(static_cast<T&&>(value));
-  }
-};
 
 template <typename Char, typename Element>
-using range_formatter_type =
+using range_formatter_type = formatter<remove_cvref_t<Element>, Char>;
-    formatter<remove_cvref_t<decltype(range_mapper<buffer_context<Char>>{}.map(
-                  std::declval<Element>()))>,
-              Char>;
 
 template <typename R>
 using maybe_const_range =
     conditional_t<has_const_begin_end<R>::value, const R, R>;
 
-// Workaround a bug in MSVC 2015 and earlier.
-#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1910
 template <typename R, typename Char>
 struct is_formattable_delayed
     : is_formattable<uncvref_type<maybe_const_range<R>>, Char> {};
-#endif
 }  // namespace detail
 
 template <typename...> struct conjunction : std::true_type {};
@@ -438,6 +383,24 @@ struct range_formatter<
       detail::string_literal<Char, '['>{};
   basic_string_view<Char> closing_bracket_ =
       detail::string_literal<Char, ']'>{};
+  bool is_debug = false;
+
+  template <typename Output, typename It, typename Sentinel, typename U = T,
+            FMT_ENABLE_IF(std::is_same<U, Char>::value)>
+  auto write_debug_string(Output& out, It it, Sentinel end) const -> Output {
+    auto buf = basic_memory_buffer<Char>();
+    for (; it != end; ++it) buf.push_back(*it);
+    auto specs = format_specs();
+    specs.set_type(presentation_type::debug);
+    return detail::write<Char>(
+        out, basic_string_view<Char>(buf.data(), buf.size()), specs);
+  }
+
+  template <typename Output, typename It, typename Sentinel, typename U = T,
+            FMT_ENABLE_IF(!std::is_same<U, Char>::value)>
+  auto write_debug_string(Output& out, It, Sentinel) const -> Output {
+    return out;
+  }
 
  public:
   FMT_CONSTEXPR range_formatter() {}
@@ -456,21 +419,40 @@ struct range_formatter<
     closing_bracket_ = close;
   }
 
-  template <typename ParseContext>
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
-  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
     auto it = ctx.begin();
     auto end = ctx.end();
+    detail::maybe_set_debug_format(underlying_, true);
+    if (it == end) return underlying_.parse(ctx);
 
-    if (it != end && *it == 'n') {
+    switch (detail::to_ascii(*it)) {
+    case 'n':
       set_brackets({}, {});
       ++it;
+      break;
+    case '?':
+      is_debug = true;
+      set_brackets({}, {});
+      ++it;
+      if (it == end || *it != 's') report_error("invalid format specifier");
+      FMT_FALLTHROUGH;
+    case 's':
+      if (!std::is_same<T, Char>::value)
+        report_error("invalid format specifier");
+      if (!is_debug) {
+        set_brackets(detail::string_literal<Char, '"'>{},
+                     detail::string_literal<Char, '"'>{});
+        set_separator({});
+        detail::maybe_set_debug_format(underlying_, false);
+      }
+      ++it;
+      return it;
     }
 
     if (it != end && *it != '}') {
-      if (*it != ':') FMT_THROW(format_error("invalid format specifier"));
+      if (*it != ':') report_error("invalid format specifier");
+      detail::maybe_set_debug_format(underlying_, false);
       ++it;
-    } else {
-      detail::maybe_set_debug_format(underlying_, true);
     }
 
     ctx.advance_to(it);
@@ -479,80 +461,26 @@ struct range_formatter<
 
   template <typename R, typename FormatContext>
   auto format(R&& range, FormatContext& ctx) const -> decltype(ctx.out()) {
-    detail::range_mapper<buffer_context<Char>> mapper;
     auto out = ctx.out();
-    out = detail::copy_str<Char>(opening_bracket_, out);
-    int i = 0;
     auto it = detail::range_begin(range);
     auto end = detail::range_end(range);
+    if (is_debug) return write_debug_string(out, std::move(it), end);
+
+    out = detail::copy<Char>(opening_bracket_, out);
+    int i = 0;
     for (; it != end; ++it) {
-      if (i > 0) out = detail::copy_str<Char>(separator_, out);
+      if (i > 0) out = detail::copy<Char>(separator_, out);
       ctx.advance_to(out);
-      auto&& item = *it;
+      auto&& item = *it;  // Need an lvalue
-      out = underlying_.format(mapper.map(item), ctx);
+      out = underlying_.format(item, ctx);
       ++i;
     }
-    out = detail::copy_str<Char>(closing_bracket_, out);
+    out = detail::copy<Char>(closing_bracket_, out);
     return out;
   }
 };
 
-enum class range_format { disabled, map, set, sequence, string, debug_string };
+FMT_EXPORT
-
-namespace detail {
-template <typename T>
-struct range_format_kind_
-    : std::integral_constant<range_format,
-                             std::is_same<uncvref_type<T>, T>::value
-                                 ? range_format::disabled
-                             : is_map<T>::value ? range_format::map
-                             : is_set<T>::value ? range_format::set
-                                                : range_format::sequence> {};
-
-template <range_format K, typename R, typename Char, typename Enable = void>
-struct range_default_formatter;
-
-template <range_format K>
-using range_format_constant = std::integral_constant<range_format, K>;
-
-template <range_format K, typename R, typename Char>
-struct range_default_formatter<
-    K, R, Char,
-    enable_if_t<(K == range_format::sequence || K == range_format::map ||
-                 K == range_format::set)>> {
-  using range_type = detail::maybe_const_range<R>;
-  range_formatter<detail::uncvref_type<range_type>, Char> underlying_;
-
-  FMT_CONSTEXPR range_default_formatter() { init(range_format_constant<K>()); }
-
-  FMT_CONSTEXPR void init(range_format_constant<range_format::set>) {
-    underlying_.set_brackets(detail::string_literal<Char, '{'>{},
-                             detail::string_literal<Char, '}'>{});
-  }
-
-  FMT_CONSTEXPR void init(range_format_constant<range_format::map>) {
-    underlying_.set_brackets(detail::string_literal<Char, '{'>{},
-                             detail::string_literal<Char, '}'>{});
-    underlying_.underlying().set_brackets({}, {});
-    underlying_.underlying().set_separator(
-        detail::string_literal<Char, ':', ' '>{});
-  }
-
-  FMT_CONSTEXPR void init(range_format_constant<range_format::sequence>) {}
-
-  template <typename ParseContext>
-  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
-    return underlying_.parse(ctx);
-  }
-
-  template <typename FormatContext>
-  auto format(range_type& range, FormatContext& ctx) const
-      -> decltype(ctx.out()) {
-    return underlying_.format(range, ctx);
-  }
-};
-}  // namespace detail
-
 template <typename T, typename Char, typename Enable = void>
 struct range_format_kind
     : conditional_t<
@@ -562,23 +490,189 @@ struct range_format_kind
 template <typename R, typename Char>
 struct formatter<
     R, Char,
-    enable_if_t<conjunction<bool_constant<range_format_kind<R, Char>::value !=
+    enable_if_t<conjunction<
-                                          range_format::disabled>
+        bool_constant<
-// Workaround a bug in MSVC 2015 and earlier.
+            range_format_kind<R, Char>::value != range_format::disabled &&
-#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1910
+            range_format_kind<R, Char>::value != range_format::map &&
-                            ,
+            range_format_kind<R, Char>::value != range_format::string &&
-                            detail::is_formattable_delayed<R, Char>
+            range_format_kind<R, Char>::value != range_format::debug_string>,
-#endif
+        detail::is_formattable_delayed<R, Char>>::value>> {
-                            >::value>>
+ private:
-    : detail::range_default_formatter<range_format_kind<R, Char>::value, R,
+  using range_type = detail::maybe_const_range<R>;
-                                      Char> {
+  range_formatter<detail::uncvref_type<range_type>, Char> range_formatter_;
+
+ public:
+  using nonlocking = void;
+
+  FMT_CONSTEXPR formatter() {
+    if (detail::const_check(range_format_kind<R, Char>::value !=
+                            range_format::set))
+      return;
+    range_formatter_.set_brackets(detail::string_literal<Char, '{'>{},
+                                  detail::string_literal<Char, '}'>{});
+  }
+
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
+    return range_formatter_.parse(ctx);
+  }
+
+  template <typename FormatContext>
+  auto format(range_type& range, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    return range_formatter_.format(range, ctx);
+  }
 };
 
-template <typename Char, typename... T> struct tuple_join_view : detail::view {
+// A map formatter.
-  const std::tuple<T...>& tuple;
+template <typename R, typename Char>
+struct formatter<
+    R, Char,
+    enable_if_t<range_format_kind<R, Char>::value == range_format::map>> {
+ private:
+  using map_type = detail::maybe_const_range<R>;
+  using element_type = detail::uncvref_type<map_type>;
+
+  decltype(detail::tuple::get_formatters<element_type, Char>(
+      detail::tuple_index_sequence<element_type>())) formatters_;
+  bool no_delimiters_ = false;
+
+ public:
+  FMT_CONSTEXPR formatter() {}
+
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
+    auto it = ctx.begin();
+    auto end = ctx.end();
+    if (it != end) {
+      if (detail::to_ascii(*it) == 'n') {
+        no_delimiters_ = true;
+        ++it;
+      }
+      if (it != end && *it != '}') {
+        if (*it != ':') report_error("invalid format specifier");
+        ++it;
+      }
+      ctx.advance_to(it);
+    }
+    detail::for_each(formatters_, detail::parse_empty_specs<Char>{ctx});
+    return it;
+  }
+
+  template <typename FormatContext>
+  auto format(map_type& map, FormatContext& ctx) const -> decltype(ctx.out()) {
+    auto out = ctx.out();
+    basic_string_view<Char> open = detail::string_literal<Char, '{'>{};
+    if (!no_delimiters_) out = detail::copy<Char>(open, out);
+    int i = 0;
+    basic_string_view<Char> sep = detail::string_literal<Char, ',', ' '>{};
+    for (auto&& value : map) {
+      if (i > 0) out = detail::copy<Char>(sep, out);
+      ctx.advance_to(out);
+      detail::for_each2(formatters_, value,
+                        detail::format_tuple_element<FormatContext>{
+                            0, ctx, detail::string_literal<Char, ':', ' '>{}});
+      ++i;
+    }
+    basic_string_view<Char> close = detail::string_literal<Char, '}'>{};
+    if (!no_delimiters_) out = detail::copy<Char>(close, out);
+    return out;
+  }
+};
+
+// A (debug_)string formatter.
+template <typename R, typename Char>
+struct formatter<
+    R, Char,
+    enable_if_t<range_format_kind<R, Char>::value == range_format::string ||
+                range_format_kind<R, Char>::value ==
+                    range_format::debug_string>> {
+ private:
+  using range_type = detail::maybe_const_range<R>;
+  using string_type =
+      conditional_t<std::is_constructible<
+                        detail::std_string_view<Char>,
+                        decltype(detail::range_begin(std::declval<R>())),
+                        decltype(detail::range_end(std::declval<R>()))>::value,
+                    detail::std_string_view<Char>, std::basic_string<Char>>;
+
+  formatter<string_type, Char> underlying_;
+
+ public:
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
+    return underlying_.parse(ctx);
+  }
+
+  template <typename FormatContext>
+  auto format(range_type& range, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    auto out = ctx.out();
+    if (detail::const_check(range_format_kind<R, Char>::value ==
+                            range_format::debug_string))
+      *out++ = '"';
+    out = underlying_.format(
+        string_type{detail::range_begin(range), detail::range_end(range)}, ctx);
+    if (detail::const_check(range_format_kind<R, Char>::value ==
+                            range_format::debug_string))
+      *out++ = '"';
+    return out;
+  }
+};
+
+template <typename It, typename Sentinel, typename Char = char>
+struct join_view : detail::view {
+  It begin;
+  Sentinel end;
   basic_string_view<Char> sep;
 
-  tuple_join_view(const std::tuple<T...>& t, basic_string_view<Char> s)
+  join_view(It b, Sentinel e, basic_string_view<Char> s)
+      : begin(std::move(b)), end(e), sep(s) {}
+};
+
+template <typename It, typename Sentinel, typename Char>
+struct formatter<join_view<It, Sentinel, Char>, Char> {
+ private:
+  using value_type =
+#ifdef __cpp_lib_ranges
+      std::iter_value_t<It>;
+#else
+      typename std::iterator_traits<It>::value_type;
+#endif
+  formatter<remove_cvref_t<value_type>, Char> value_formatter_;
+
+  using view = conditional_t<std::is_copy_constructible<It>::value,
+                             const join_view<It, Sentinel, Char>,
+                             join_view<It, Sentinel, Char>>;
+
+ public:
+  using nonlocking = void;
+
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
+    return value_formatter_.parse(ctx);
+  }
+
+  template <typename FormatContext>
+  auto format(view& value, FormatContext& ctx) const -> decltype(ctx.out()) {
+    using iter =
+        conditional_t<std::is_copy_constructible<view>::value, It, It&>;
+    iter it = value.begin;
+    auto out = ctx.out();
+    if (it == value.end) return out;
+    out = value_formatter_.format(*it, ctx);
+    ++it;
+    while (it != value.end) {
+      out = detail::copy<Char>(value.sep.begin(), value.sep.end(), out);
+      ctx.advance_to(out);
+      out = value_formatter_.format(*it, ctx);
+      ++it;
+    }
+    return out;
+  }
+};
+
+template <typename Char, typename Tuple> struct tuple_join_view : detail::view {
+  const Tuple& tuple;
+  basic_string_view<Char> sep;
+
+  tuple_join_view(const Tuple& t, basic_string_view<Char> s)
       : tuple(t), sep{s} {}
 };
 
@@ -589,65 +683,64 @@ template <typename Char, typename... T> struct tuple_join_view : detail::view {
 #  define FMT_TUPLE_JOIN_SPECIFIERS 0
 #endif
 
-template <typename Char, typename... T>
+template <typename Char, typename Tuple>
-struct formatter<tuple_join_view<Char, T...>, Char> {
+struct formatter<tuple_join_view<Char, Tuple>, Char,
-  template <typename ParseContext>
+                 enable_if_t<is_tuple_like<Tuple>::value>> {
-  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
-    return do_parse(ctx, std::integral_constant<size_t, sizeof...(T)>());
+    return do_parse(ctx, std::tuple_size<Tuple>());
   }
 
   template <typename FormatContext>
-  auto format(const tuple_join_view<Char, T...>& value,
+  auto format(const tuple_join_view<Char, Tuple>& value,
               FormatContext& ctx) const -> typename FormatContext::iterator {
-    return do_format(value, ctx,
+    return do_format(value, ctx, std::tuple_size<Tuple>());
-                     std::integral_constant<size_t, sizeof...(T)>());
   }
 
  private:
-  std::tuple<formatter<typename std::decay<T>::type, Char>...> formatters_;
+  decltype(detail::tuple::get_formatters<Tuple, Char>(
+      detail::tuple_index_sequence<Tuple>())) formatters_;
 
-  template <typename ParseContext>
+  FMT_CONSTEXPR auto do_parse(parse_context<Char>& ctx,
-  FMT_CONSTEXPR auto do_parse(ParseContext& ctx,
                               std::integral_constant<size_t, 0>)
-      -> decltype(ctx.begin()) {
+      -> const Char* {
     return ctx.begin();
   }
 
-  template <typename ParseContext, size_t N>
+  template <size_t N>
-  FMT_CONSTEXPR auto do_parse(ParseContext& ctx,
+  FMT_CONSTEXPR auto do_parse(parse_context<Char>& ctx,
                               std::integral_constant<size_t, N>)
-      -> decltype(ctx.begin()) {
+      -> const Char* {
     auto end = ctx.begin();
 #if FMT_TUPLE_JOIN_SPECIFIERS
-    end = std::get<sizeof...(T) - N>(formatters_).parse(ctx);
+    end = std::get<std::tuple_size<Tuple>::value - N>(formatters_).parse(ctx);
     if (N > 1) {
       auto end1 = do_parse(ctx, std::integral_constant<size_t, N - 1>());
       if (end != end1)
-        FMT_THROW(format_error("incompatible format specs for tuple elements"));
+        report_error("incompatible format specs for tuple elements");
     }
 #endif
     return end;
   }
 
   template <typename FormatContext>
-  auto do_format(const tuple_join_view<Char, T...>&, FormatContext& ctx,
+  auto do_format(const tuple_join_view<Char, Tuple>&, FormatContext& ctx,
                  std::integral_constant<size_t, 0>) const ->
       typename FormatContext::iterator {
     return ctx.out();
   }
 
   template <typename FormatContext, size_t N>
-  auto do_format(const tuple_join_view<Char, T...>& value, FormatContext& ctx,
+  auto do_format(const tuple_join_view<Char, Tuple>& value, FormatContext& ctx,
                  std::integral_constant<size_t, N>) const ->
       typename FormatContext::iterator {
-    auto out = std::get<sizeof...(T) - N>(formatters_)
+    using std::get;
-                   .format(std::get<sizeof...(T) - N>(value.tuple), ctx);
+    auto out =
-    if (N > 1) {
+        std::get<std::tuple_size<Tuple>::value - N>(formatters_)
-      out = std::copy(value.sep.begin(), value.sep.end(), out);
+            .format(get<std::tuple_size<Tuple>::value - N>(value.tuple), ctx);
-      ctx.advance_to(out);
+    if (N <= 1) return out;
-      return do_format(value, ctx, std::integral_constant<size_t, N - 1>());
+    out = detail::copy<Char>(value.sep, out);
-    }
+    ctx.advance_to(out);
-    return out;
+    return do_format(value, ctx, std::integral_constant<size_t, N - 1>());
   }
 };
 
@@ -691,40 +784,57 @@ struct formatter<
 
 FMT_BEGIN_EXPORT
 
+/// Returns a view that formats the iterator range `[begin, end)` with elements
+/// separated by `sep`.
+template <typename It, typename Sentinel>
+auto join(It begin, Sentinel end, string_view sep) -> join_view<It, Sentinel> {
+  return {std::move(begin), end, sep};
+}
+
 /**
-  \rst
+ * Returns a view that formats `range` with elements separated by `sep`.
-  Returns an object that formats `tuple` with elements separated by `sep`.
+ *
-
+ * **Example**:
-  **Example**::
+ *
-
+ *     auto v = std::vector<int>{1, 2, 3};
-    std::tuple<int, char> t = {1, 'a'};
+ *     fmt::print("{}", fmt::join(v, ", "));
-    fmt::print("{}", fmt::join(t, ", "));
+ *     // Output: 1, 2, 3
-    // Output: "1, a"
+ *
-  \endrst
+ * `fmt::join` applies passed format specifiers to the range elements:
+ *
+ *     fmt::print("{:02}", fmt::join(v, ", "));
+ *     // Output: 01, 02, 03
  */
-template <typename... T>
+template <typename Range, FMT_ENABLE_IF(!is_tuple_like<Range>::value)>
-FMT_CONSTEXPR auto join(const std::tuple<T...>& tuple, string_view sep)
+auto join(Range&& r, string_view sep)
-    -> tuple_join_view<char, T...> {
+    -> join_view<decltype(detail::range_begin(r)),
-  return {tuple, sep};
+                 decltype(detail::range_end(r))> {
+  return {detail::range_begin(r), detail::range_end(r), sep};
 }
 
-template <typename... T>
+/**
-FMT_CONSTEXPR auto join(const std::tuple<T...>& tuple,
+ * Returns an object that formats `std::tuple` with elements separated by `sep`.
-                        basic_string_view<wchar_t> sep)
+ *
-    -> tuple_join_view<wchar_t, T...> {
+ * **Example**:
+ *
+ *     auto t = std::tuple<int, char>{1, 'a'};
+ *     fmt::print("{}", fmt::join(t, ", "));
+ *     // Output: 1, a
+ */
+template <typename Tuple, FMT_ENABLE_IF(is_tuple_like<Tuple>::value)>
+FMT_CONSTEXPR auto join(const Tuple& tuple, string_view sep)
+    -> tuple_join_view<char, Tuple> {
   return {tuple, sep};
 }
 
 /**
-  \rst
+ * Returns an object that formats `std::initializer_list` with elements
-  Returns an object that formats `initializer_list` with elements separated by
+ * separated by `sep`.
-  `sep`.
+ *
-
+ * **Example**:
-  **Example**::
+ *
-
+ *     fmt::print("{}", fmt::join({1, 2, 3}, ", "));
-    fmt::print("{}", fmt::join({1, 2, 3}, ", "));
+ *     // Output: "1, 2, 3"
-    // Output: "1, 2, 3"
-  \endrst
  */
 template <typename T>
 auto join(std::initializer_list<T> list, string_view sep)

3rdparty/fmt/include/fmt/std.h

@@ -8,39 +8,49 @@
 #ifndef FMT_STD_H_
 #define FMT_STD_H_
 
-#include <atomic>
-#include <bitset>
-#include <cstdlib>
-#include <exception>
-#include <memory>
-#include <thread>
-#include <type_traits>
-#include <typeinfo>
-#include <utility>
-#include <vector>
-
 #include "format.h"
 #include "ostream.h"
 
+#ifndef FMT_MODULE
+#  include <atomic>
+#  include <bitset>
+#  include <complex>
+#  include <cstdlib>
+#  include <exception>
+#  include <functional>
+#  include <memory>
+#  include <thread>
+#  include <type_traits>
+#  include <typeinfo>
+#  include <utility>
+#  include <vector>
+
+// Check FMT_CPLUSPLUS to suppress a bogus warning in MSVC.
+#  if FMT_CPLUSPLUS >= 201703L
+#    if FMT_HAS_INCLUDE(<filesystem>) && \
+        (!defined(FMT_CPP_LIB_FILESYSTEM) || FMT_CPP_LIB_FILESYSTEM != 0)
+#      include <filesystem>
+#    endif
+#    if FMT_HAS_INCLUDE(<variant>)
+#      include <variant>
+#    endif
+#    if FMT_HAS_INCLUDE(<optional>)
+#      include <optional>
+#    endif
+#  endif
+// Use > instead of >= in the version check because <source_location> may be
+// available after C++17 but before C++20 is marked as implemented.
+#  if FMT_CPLUSPLUS > 201703L && FMT_HAS_INCLUDE(<source_location>)
+#    include <source_location>
+#  endif
+#  if FMT_CPLUSPLUS > 202002L && FMT_HAS_INCLUDE(<expected>)
+#    include <expected>
+#  endif
+#endif  // FMT_MODULE
+
 #if FMT_HAS_INCLUDE(<version>)
 #  include <version>
 #endif
-// Checking FMT_CPLUSPLUS for warning suppression in MSVC.
-#if FMT_CPLUSPLUS >= 201703L
-#  if FMT_HAS_INCLUDE(<filesystem>)
-#    include <filesystem>
-#  endif
-#  if FMT_HAS_INCLUDE(<variant>)
-#    include <variant>
-#  endif
-#  if FMT_HAS_INCLUDE(<optional>)
-#    include <optional>
-#  endif
-#endif
-
-#if FMT_CPLUSPLUS > 201703L && FMT_HAS_INCLUDE(<source_location>)
-#  include <source_location>
-#endif
 
 // GCC 4 does not support FMT_HAS_INCLUDE.
 #if FMT_HAS_INCLUDE(<cxxabi.h>) || defined(__GLIBCXX__)
@@ -52,17 +62,6 @@
 #  endif
 #endif
 
-// Check if typeid is available.
-#ifndef FMT_USE_TYPEID
-// __RTTI is for EDG compilers. In MSVC typeid is available without RTTI.
-#  if defined(__GXX_RTTI) || FMT_HAS_FEATURE(cxx_rtti) || FMT_MSC_VERSION || \
-      defined(__INTEL_RTTI__) || defined(__RTTI)
-#    define FMT_USE_TYPEID 1
-#  else
-#    define FMT_USE_TYPEID 0
-#  endif
-#endif
-
 // For older Xcode versions, __cpp_lib_xxx flags are inaccurately defined.
 #ifndef FMT_CPP_LIB_FILESYSTEM
 #  ifdef __cpp_lib_filesystem
@@ -117,7 +116,7 @@ void write_escaped_path(basic_memory_buffer<Char>& quoted,
 FMT_EXPORT
 template <typename Char> struct formatter<std::filesystem::path, Char> {
  private:
-  format_specs<Char> specs_;
+  format_specs specs_;
   detail::arg_ref<Char> width_ref_;
   bool debug_ = false;
   char path_type_ = 0;
@@ -125,33 +124,33 @@ template <typename Char> struct formatter<std::filesystem::path, Char> {
  public:
   FMT_CONSTEXPR void set_debug_format(bool set = true) { debug_ = set; }
 
-  template <typename ParseContext> FMT_CONSTEXPR auto parse(ParseContext& ctx) {
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) {
     auto it = ctx.begin(), end = ctx.end();
     if (it == end) return it;
 
     it = detail::parse_align(it, end, specs_);
     if (it == end) return it;
 
-    it = detail::parse_dynamic_spec(it, end, specs_.width, width_ref_, ctx);
+    Char c = *it;
+    if ((c >= '0' && c <= '9') || c == '{')
+      it = detail::parse_width(it, end, specs_, width_ref_, ctx);
     if (it != end && *it == '?') {
       debug_ = true;
       ++it;
     }
-    if (it != end && (*it == 'g')) path_type_ = *it++;
+    if (it != end && (*it == 'g')) path_type_ = detail::to_ascii(*it++);
     return it;
   }
 
   template <typename FormatContext>
   auto format(const std::filesystem::path& p, FormatContext& ctx) const {
     auto specs = specs_;
-#  ifdef _WIN32
+    auto path_string =
-    auto path_string = !path_type_ ? p.native() : p.generic_wstring();
+        !path_type_ ? p.native()
-#  else
+                    : p.generic_string<std::filesystem::path::value_type>();
-    auto path_string = !path_type_ ? p.native() : p.generic_string();
-#  endif
 
-    detail::handle_dynamic_spec<detail::width_checker>(specs.width, width_ref_,
+    detail::handle_dynamic_spec(specs.dynamic_width(), specs.width, width_ref_,
-                                                       ctx);
+                                ctx);
     if (!debug_) {
       auto s = detail::get_path_string<Char>(p, path_string);
       return detail::write(ctx.out(), basic_string_view<Char>(s), specs);
@@ -163,13 +162,30 @@ template <typename Char> struct formatter<std::filesystem::path, Char> {
                          specs);
   }
 };
+
+class path : public std::filesystem::path {
+ public:
+  auto display_string() const -> std::string {
+    const std::filesystem::path& base = *this;
+    return fmt::format(FMT_STRING("{}"), base);
+  }
+  auto system_string() const -> std::string { return string(); }
+
+  auto generic_display_string() const -> std::string {
+    const std::filesystem::path& base = *this;
+    return fmt::format(FMT_STRING("{:g}"), base);
+  }
+  auto generic_system_string() const -> std::string { return generic_string(); }
+};
+
 FMT_END_NAMESPACE
 #endif  // FMT_CPP_LIB_FILESYSTEM
 
 FMT_BEGIN_NAMESPACE
 FMT_EXPORT
 template <std::size_t N, typename Char>
-struct formatter<std::bitset<N>, Char> : nested_formatter<string_view> {
+struct formatter<std::bitset<N>, Char>
+    : nested_formatter<basic_string_view<Char>, Char> {
  private:
   // Functor because C++11 doesn't support generic lambdas.
   struct writer {
@@ -189,7 +205,7 @@ struct formatter<std::bitset<N>, Char> : nested_formatter<string_view> {
   template <typename FormatContext>
   auto format(const std::bitset<N>& bs, FormatContext& ctx) const
       -> decltype(ctx.out()) {
-    return write_padded(ctx, writer{bs});
+    return this->write_padded(ctx, writer{bs});
   }
 };
 
@@ -222,7 +238,7 @@ struct formatter<std::optional<T>, Char,
   FMT_CONSTEXPR static void maybe_set_debug_format(U&, ...) {}
 
  public:
-  template <typename ParseContext> FMT_CONSTEXPR auto parse(ParseContext& ctx) {
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) {
     maybe_set_debug_format(underlying_, true);
     return underlying_.parse(ctx);
   }
@@ -242,13 +258,62 @@ struct formatter<std::optional<T>, Char,
 FMT_END_NAMESPACE
 #endif  // __cpp_lib_optional
 
+#if defined(__cpp_lib_expected) || FMT_CPP_LIB_VARIANT
+
+FMT_BEGIN_NAMESPACE
+namespace detail {
+
+template <typename Char, typename OutputIt, typename T>
+auto write_escaped_alternative(OutputIt out, const T& v) -> OutputIt {
+  if constexpr (has_to_string_view<T>::value)
+    return write_escaped_string<Char>(out, detail::to_string_view(v));
+  if constexpr (std::is_same_v<T, Char>) return write_escaped_char(out, v);
+  return write<Char>(out, v);
+}
+
+}  // namespace detail
+
+FMT_END_NAMESPACE
+#endif
+
+#ifdef __cpp_lib_expected
+FMT_BEGIN_NAMESPACE
+
+FMT_EXPORT
+template <typename T, typename E, typename Char>
+struct formatter<std::expected<T, E>, Char,
+                 std::enable_if_t<(std::is_void<T>::value ||
+                                   is_formattable<T, Char>::value) &&
+                                  is_formattable<E, Char>::value>> {
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
+    return ctx.begin();
+  }
+
+  template <typename FormatContext>
+  auto format(const std::expected<T, E>& value, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    auto out = ctx.out();
+
+    if (value.has_value()) {
+      out = detail::write<Char>(out, "expected(");
+      if constexpr (!std::is_void<T>::value)
+        out = detail::write_escaped_alternative<Char>(out, *value);
+    } else {
+      out = detail::write<Char>(out, "unexpected(");
+      out = detail::write_escaped_alternative<Char>(out, value.error());
+    }
+    *out++ = ')';
+    return out;
+  }
+};
+FMT_END_NAMESPACE
+#endif  // __cpp_lib_expected
+
 #ifdef __cpp_lib_source_location
 FMT_BEGIN_NAMESPACE
 FMT_EXPORT
 template <> struct formatter<std::source_location> {
-  template <typename ParseContext> FMT_CONSTEXPR auto parse(ParseContext& ctx) {
+  FMT_CONSTEXPR auto parse(parse_context<>& ctx) { return ctx.begin(); }
-    return ctx.begin();
-  }
 
   template <typename FormatContext>
   auto format(const std::source_location& loc, FormatContext& ctx) const
@@ -291,16 +356,6 @@ template <typename T, typename C> class is_variant_formattable_ {
       decltype(check(variant_index_sequence<T>{}))::value;
 };
 
-template <typename Char, typename OutputIt, typename T>
-auto write_variant_alternative(OutputIt out, const T& v) -> OutputIt {
-  if constexpr (is_string<T>::value)
-    return write_escaped_string<Char>(out, detail::to_string_view(v));
-  else if constexpr (std::is_same_v<T, Char>)
-    return write_escaped_char(out, v);
-  else
-    return write<Char>(out, v);
-}
-
 }  // namespace detail
 
 template <typename T> struct is_variant_like {
@@ -314,8 +369,7 @@ template <typename T, typename C> struct is_variant_formattable {
 
 FMT_EXPORT
 template <typename Char> struct formatter<std::monostate, Char> {
-  template <typename ParseContext>
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
-  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
     return ctx.begin();
   }
 
@@ -332,8 +386,7 @@ struct formatter<
     Variant, Char,
     std::enable_if_t<std::conjunction_v<
         is_variant_like<Variant>, is_variant_formattable<Variant, Char>>>> {
-  template <typename ParseContext>
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
-  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
     return ctx.begin();
   }
 
@@ -346,7 +399,7 @@ struct formatter<
     FMT_TRY {
       std::visit(
           [&](const auto& v) {
-            out = detail::write_variant_alternative<Char>(out, v);
+            out = detail::write_escaped_alternative<Char>(out, v);
           },
           value);
     }
@@ -362,23 +415,128 @@ FMT_END_NAMESPACE
 
 FMT_BEGIN_NAMESPACE
 FMT_EXPORT
-template <typename Char> struct formatter<std::error_code, Char> {
+template <> struct formatter<std::error_code> {
-  template <typename ParseContext>
+ private:
-  FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
+  format_specs specs_;
-    return ctx.begin();
+  detail::arg_ref<char> width_ref_;
+
+ public:
+  FMT_CONSTEXPR auto parse(parse_context<>& ctx) -> const char* {
+    auto it = ctx.begin(), end = ctx.end();
+    if (it == end) return it;
+
+    it = detail::parse_align(it, end, specs_);
+    if (it == end) return it;
+
+    char c = *it;
+    if ((c >= '0' && c <= '9') || c == '{')
+      it = detail::parse_width(it, end, specs_, width_ref_, ctx);
+    return it;
   }
 
   template <typename FormatContext>
-  FMT_CONSTEXPR auto format(const std::error_code& ec, FormatContext& ctx) const
+  FMT_CONSTEXPR20 auto format(const std::error_code& ec,
-      -> decltype(ctx.out()) {
+                              FormatContext& ctx) const -> decltype(ctx.out()) {
-    auto out = ctx.out();
+    auto specs = specs_;
-    out = detail::write_bytes(out, ec.category().name(), format_specs<Char>());
+    detail::handle_dynamic_spec(specs.dynamic_width(), specs.width, width_ref_,
-    out = detail::write<Char>(out, Char(':'));
+                                ctx);
-    out = detail::write<Char>(out, ec.value());
+    memory_buffer buf;
-    return out;
+    buf.append(string_view(ec.category().name()));
+    buf.push_back(':');
+    detail::write<char>(appender(buf), ec.value());
+    return detail::write<char>(ctx.out(), string_view(buf.data(), buf.size()),
+                               specs);
   }
 };
 
+#if FMT_USE_RTTI
+namespace detail {
+
+template <typename Char, typename OutputIt>
+auto write_demangled_name(OutputIt out, const std::type_info& ti) -> OutputIt {
+#  ifdef FMT_HAS_ABI_CXA_DEMANGLE
+  int status = 0;
+  std::size_t size = 0;
+  std::unique_ptr<char, void (*)(void*)> demangled_name_ptr(
+      abi::__cxa_demangle(ti.name(), nullptr, &size, &status), &std::free);
+
+  string_view demangled_name_view;
+  if (demangled_name_ptr) {
+    demangled_name_view = demangled_name_ptr.get();
+
+    // Normalization of stdlib inline namespace names.
+    // libc++ inline namespaces.
+    //  std::__1::*       -> std::*
+    //  std::__1::__fs::* -> std::*
+    // libstdc++ inline namespaces.
+    //  std::__cxx11::*             -> std::*
+    //  std::filesystem::__cxx11::* -> std::filesystem::*
+    if (demangled_name_view.starts_with("std::")) {
+      char* begin = demangled_name_ptr.get();
+      char* to = begin + 5;  // std::
+      for (char *from = to, *end = begin + demangled_name_view.size();
+           from < end;) {
+        // This is safe, because demangled_name is NUL-terminated.
+        if (from[0] == '_' && from[1] == '_') {
+          char* next = from + 1;
+          while (next < end && *next != ':') next++;
+          if (next[0] == ':' && next[1] == ':') {
+            from = next + 2;
+            continue;
+          }
+        }
+        *to++ = *from++;
+      }
+      demangled_name_view = {begin, detail::to_unsigned(to - begin)};
+    }
+  } else {
+    demangled_name_view = string_view(ti.name());
+  }
+  return detail::write_bytes<Char>(out, demangled_name_view);
+#  elif FMT_MSC_VERSION
+  const string_view demangled_name(ti.name());
+  for (std::size_t i = 0; i < demangled_name.size(); ++i) {
+    auto sub = demangled_name;
+    sub.remove_prefix(i);
+    if (sub.starts_with("enum ")) {
+      i += 4;
+      continue;
+    }
+    if (sub.starts_with("class ") || sub.starts_with("union ")) {
+      i += 5;
+      continue;
+    }
+    if (sub.starts_with("struct ")) {
+      i += 6;
+      continue;
+    }
+    if (*sub.begin() != ' ') *out++ = *sub.begin();
+  }
+  return out;
+#  else
+  return detail::write_bytes<Char>(out, string_view(ti.name()));
+#  endif
+}
+
+}  // namespace detail
+
+FMT_EXPORT
+template <typename Char>
+struct formatter<std::type_info, Char  // DEPRECATED! Mixing code unit types.
+                 > {
+ public:
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
+    return ctx.begin();
+  }
+
+  template <typename Context>
+  auto format(const std::type_info& ti, Context& ctx) const
+      -> decltype(ctx.out()) {
+    return detail::write_demangled_name<Char>(ctx.out(), ti);
+  }
+};
+#endif
+
 FMT_EXPORT
 template <typename T, typename Char>
 struct formatter<
@@ -388,81 +546,29 @@ struct formatter<
   bool with_typename_ = false;
 
  public:
-  FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
-      -> decltype(ctx.begin()) {
     auto it = ctx.begin();
     auto end = ctx.end();
     if (it == end || *it == '}') return it;
     if (*it == 't') {
       ++it;
-      with_typename_ = FMT_USE_TYPEID != 0;
+      with_typename_ = FMT_USE_RTTI != 0;
     }
     return it;
   }
 
-  template <typename OutputIt>
+  template <typename Context>
-  auto format(const std::exception& ex,
+  auto format(const std::exception& ex, Context& ctx) const
-              basic_format_context<OutputIt, Char>& ctx) const -> OutputIt {
+      -> decltype(ctx.out()) {
-    format_specs<Char> spec;
     auto out = ctx.out();
-    if (!with_typename_)
+#if FMT_USE_RTTI
-      return detail::write_bytes(out, string_view(ex.what()), spec);
+    if (with_typename_) {
-
+      out = detail::write_demangled_name<Char>(out, typeid(ex));
-#if FMT_USE_TYPEID
+      *out++ = ':';
-    const std::type_info& ti = typeid(ex);
+      *out++ = ' ';
-#  ifdef FMT_HAS_ABI_CXA_DEMANGLE
-    int status = 0;
-    std::size_t size = 0;
-    std::unique_ptr<char, void (*)(void*)> demangled_name_ptr(
-        abi::__cxa_demangle(ti.name(), nullptr, &size, &status), &std::free);
-
-    string_view demangled_name_view;
-    if (demangled_name_ptr) {
-      demangled_name_view = demangled_name_ptr.get();
-
-      // Normalization of stdlib inline namespace names.
-      // libc++ inline namespaces.
-      //  std::__1::*       -> std::*
-      //  std::__1::__fs::* -> std::*
-      // libstdc++ inline namespaces.
-      //  std::__cxx11::*             -> std::*
-      //  std::filesystem::__cxx11::* -> std::filesystem::*
-      if (demangled_name_view.starts_with("std::")) {
-        char* begin = demangled_name_ptr.get();
-        char* to = begin + 5;  // std::
-        for (char *from = to, *end = begin + demangled_name_view.size();
-             from < end;) {
-          // This is safe, because demangled_name is NUL-terminated.
-          if (from[0] == '_' && from[1] == '_') {
-            char* next = from + 1;
-            while (next < end && *next != ':') next++;
-            if (next[0] == ':' && next[1] == ':') {
-              from = next + 2;
-              continue;
-            }
-          }
-          *to++ = *from++;
-        }
-        demangled_name_view = {begin, detail::to_unsigned(to - begin)};
-      }
-    } else {
-      demangled_name_view = string_view(ti.name());
     }
-    out = detail::write_bytes(out, demangled_name_view, spec);
-#  elif FMT_MSC_VERSION
-    string_view demangled_name_view(ti.name());
-    if (demangled_name_view.starts_with("class "))
-      demangled_name_view.remove_prefix(6);
-    else if (demangled_name_view.starts_with("struct "))
-      demangled_name_view.remove_prefix(7);
-    out = detail::write_bytes(out, demangled_name_view, spec);
-#  else
-    out = detail::write_bytes(out, string_view(ti.name()), spec);
-#  endif
-    *out++ = ':';
-    *out++ = ' ';
-    return detail::write_bytes(out, string_view(ex.what()), spec);
 #endif
+    return detail::write_bytes<Char>(out, string_view(ex.what()));
   }
 };
 
@@ -509,6 +615,14 @@ struct formatter<BitRef, Char,
   }
 };
 
+template <typename T, typename Deleter>
+auto ptr(const std::unique_ptr<T, Deleter>& p) -> const void* {
+  return p.get();
+}
+template <typename T> auto ptr(const std::shared_ptr<T>& p) -> const void* {
+  return p.get();
+}
+
 FMT_EXPORT
 template <typename T, typename Char>
 struct formatter<std::atomic<T>, Char,
@@ -533,5 +647,80 @@ struct formatter<std::atomic_flag, Char> : formatter<bool, Char> {
 };
 #endif  // __cpp_lib_atomic_flag_test
 
+FMT_EXPORT
+template <typename T, typename Char> struct formatter<std::complex<T>, Char> {
+ private:
+  detail::dynamic_format_specs<Char> specs_;
+
+  template <typename FormatContext, typename OutputIt>
+  FMT_CONSTEXPR auto do_format(const std::complex<T>& c,
+                               detail::dynamic_format_specs<Char>& specs,
+                               FormatContext& ctx, OutputIt out) const
+      -> OutputIt {
+    if (c.real() != 0) {
+      *out++ = Char('(');
+      out = detail::write<Char>(out, c.real(), specs, ctx.locale());
+      specs.set_sign(sign::plus);
+      out = detail::write<Char>(out, c.imag(), specs, ctx.locale());
+      if (!detail::isfinite(c.imag())) *out++ = Char(' ');
+      *out++ = Char('i');
+      *out++ = Char(')');
+      return out;
+    }
+    out = detail::write<Char>(out, c.imag(), specs, ctx.locale());
+    if (!detail::isfinite(c.imag())) *out++ = Char(' ');
+    *out++ = Char('i');
+    return out;
+  }
+
+ public:
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
+    if (ctx.begin() == ctx.end() || *ctx.begin() == '}') return ctx.begin();
+    return parse_format_specs(ctx.begin(), ctx.end(), specs_, ctx,
+                              detail::type_constant<T, Char>::value);
+  }
+
+  template <typename FormatContext>
+  auto format(const std::complex<T>& c, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    auto specs = specs_;
+    if (specs.dynamic()) {
+      detail::handle_dynamic_spec(specs.dynamic_width(), specs.width,
+                                  specs.width_ref, ctx);
+      detail::handle_dynamic_spec(specs.dynamic_precision(), specs.precision,
+                                  specs.precision_ref, ctx);
+    }
+
+    if (specs.width == 0) return do_format(c, specs, ctx, ctx.out());
+    auto buf = basic_memory_buffer<Char>();
+
+    auto outer_specs = format_specs();
+    outer_specs.width = specs.width;
+    outer_specs.copy_fill_from(specs);
+    outer_specs.set_align(specs.align());
+
+    specs.width = 0;
+    specs.set_fill({});
+    specs.set_align(align::none);
+
+    do_format(c, specs, ctx, basic_appender<Char>(buf));
+    return detail::write<Char>(ctx.out(),
+                               basic_string_view<Char>(buf.data(), buf.size()),
+                               outer_specs);
+  }
+};
+
+FMT_EXPORT
+template <typename T, typename Char>
+struct formatter<std::reference_wrapper<T>, Char,
+                 enable_if_t<is_formattable<remove_cvref_t<T>, Char>::value>>
+    : formatter<remove_cvref_t<T>, Char> {
+  template <typename FormatContext>
+  auto format(std::reference_wrapper<T> ref, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    return formatter<remove_cvref_t<T>, Char>::format(ref.get(), ctx);
+  }
+};
+
 FMT_END_NAMESPACE
 #endif  // FMT_STD_H_

3rdparty/fmt/include/fmt/xchar.h

@@ -8,12 +8,16 @@
 #ifndef FMT_XCHAR_H_
 #define FMT_XCHAR_H_
 
-#include <cwchar>
+#include "color.h"
-
 #include "format.h"
+#include "ostream.h"
+#include "ranges.h"
 
-#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
+#ifndef FMT_MODULE
-#  include <locale>
+#  include <cwchar>
+#  if FMT_USE_LOCALE
+#    include <locale>
+#  endif
 #endif
 
 FMT_BEGIN_NAMESPACE
@@ -22,10 +26,26 @@ namespace detail {
 template <typename T>
 using is_exotic_char = bool_constant<!std::is_same<T, char>::value>;
 
-inline auto write_loc(std::back_insert_iterator<detail::buffer<wchar_t>> out,
+template <typename S, typename = void> struct format_string_char {};
-                      loc_value value, const format_specs<wchar_t>& specs,
+
-                      locale_ref loc) -> bool {
+template <typename S>
-#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
+struct format_string_char<
+    S, void_t<decltype(sizeof(detail::to_string_view(std::declval<S>())))>> {
+  using type = char_t<S>;
+};
+
+template <typename S>
+struct format_string_char<
+    S, enable_if_t<std::is_base_of<detail::compile_string, S>::value>> {
+  using type = typename S::char_type;
+};
+
+template <typename S>
+using format_string_char_t = typename format_string_char<S>::type;
+
+inline auto write_loc(basic_appender<wchar_t> out, loc_value value,
+                      const format_specs& specs, locale_ref loc) -> bool {
+#if FMT_USE_LOCALE
   auto& numpunct =
       std::use_facet<std::numpunct<wchar_t>>(loc.get<std::locale>());
   auto separator = std::wstring();
@@ -40,42 +60,79 @@ inline auto write_loc(std::back_insert_iterator<detail::buffer<wchar_t>> out,
 FMT_BEGIN_EXPORT
 
 using wstring_view = basic_string_view<wchar_t>;
-using wformat_parse_context = basic_format_parse_context<wchar_t>;
+using wformat_parse_context = parse_context<wchar_t>;
-using wformat_context = buffer_context<wchar_t>;
+using wformat_context = buffered_context<wchar_t>;
 using wformat_args = basic_format_args<wformat_context>;
 using wmemory_buffer = basic_memory_buffer<wchar_t>;
 
-#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409
+template <typename Char, typename... T> struct basic_fstring {
-// Workaround broken conversion on older gcc.
+ private:
-template <typename... Args> using wformat_string = wstring_view;
+  basic_string_view<Char> str_;
-inline auto runtime(wstring_view s) -> wstring_view { return s; }
+
-#else
+  static constexpr int num_static_named_args =
-template <typename... Args>
+      detail::count_static_named_args<T...>();
-using wformat_string = basic_format_string<wchar_t, type_identity_t<Args>...>;
+
+  using checker = detail::format_string_checker<
+      Char, static_cast<int>(sizeof...(T)), num_static_named_args,
+      num_static_named_args != detail::count_named_args<T...>()>;
+
+  using arg_pack = detail::arg_pack<T...>;
+
+ public:
+  using t = basic_fstring;
+
+  template <typename S,
+            FMT_ENABLE_IF(
+                std::is_convertible<const S&, basic_string_view<Char>>::value)>
+  FMT_CONSTEVAL FMT_ALWAYS_INLINE basic_fstring(const S& s) : str_(s) {
+    if (FMT_USE_CONSTEVAL)
+      detail::parse_format_string<Char>(s, checker(s, arg_pack()));
+  }
+  template <typename S,
+            FMT_ENABLE_IF(std::is_base_of<detail::compile_string, S>::value&&
+                              std::is_same<typename S::char_type, Char>::value)>
+  FMT_ALWAYS_INLINE basic_fstring(const S&) : str_(S()) {
+    FMT_CONSTEXPR auto sv = basic_string_view<Char>(S());
+    FMT_CONSTEXPR int ignore =
+        (parse_format_string(sv, checker(sv, arg_pack())), 0);
+    detail::ignore_unused(ignore);
+  }
+  basic_fstring(runtime_format_string<Char> fmt) : str_(fmt.str) {}
+
+  operator basic_string_view<Char>() const { return str_; }
+  auto get() const -> basic_string_view<Char> { return str_; }
+};
+
+template <typename Char, typename... T>
+using basic_format_string = basic_fstring<Char, T...>;
+
+template <typename... T>
+using wformat_string = typename basic_format_string<wchar_t, T...>::t;
 inline auto runtime(wstring_view s) -> runtime_format_string<wchar_t> {
   return {{s}};
 }
-#endif
 
 template <> struct is_char<wchar_t> : std::true_type {};
-template <> struct is_char<detail::char8_type> : std::true_type {};
 template <> struct is_char<char16_t> : std::true_type {};
 template <> struct is_char<char32_t> : std::true_type {};
 
+#ifdef __cpp_char8_t
+template <> struct is_char<char8_t> : bool_constant<detail::is_utf8_enabled> {};
+#endif
+
 template <typename... T>
-constexpr auto make_wformat_args(const T&... args)
+constexpr auto make_wformat_args(T&... args)
-    -> format_arg_store<wformat_context, T...> {
+    -> decltype(fmt::make_format_args<wformat_context>(args...)) {
-  return {args...};
+  return fmt::make_format_args<wformat_context>(args...);
 }
 
+#if !FMT_USE_NONTYPE_TEMPLATE_ARGS
 inline namespace literals {
-#if FMT_USE_USER_DEFINED_LITERALS && !FMT_USE_NONTYPE_TEMPLATE_ARGS
+inline auto operator""_a(const wchar_t* s, size_t) -> detail::udl_arg<wchar_t> {
-constexpr auto operator""_a(const wchar_t* s, size_t)
-    -> detail::udl_arg<wchar_t> {
   return {s};
 }
-#endif
 }  // namespace literals
+#endif
 
 template <typename It, typename Sentinel>
 auto join(It begin, Sentinel end, wstring_view sep)
@@ -83,9 +140,9 @@ auto join(It begin, Sentinel end, wstring_view sep)
   return {begin, end, sep};
 }
 
-template <typename Range>
+template <typename Range, FMT_ENABLE_IF(!is_tuple_like<Range>::value)>
 auto join(Range&& range, wstring_view sep)
-    -> join_view<detail::iterator_t<Range>, detail::sentinel_t<Range>,
+    -> join_view<decltype(std::begin(range)), decltype(std::end(range)),
                  wchar_t> {
   return join(std::begin(range), std::end(range), sep);
 }
@@ -96,13 +153,19 @@ auto join(std::initializer_list<T> list, wstring_view sep)
   return join(std::begin(list), std::end(list), sep);
 }
 
+template <typename Tuple, FMT_ENABLE_IF(is_tuple_like<Tuple>::value)>
+auto join(const Tuple& tuple, basic_string_view<wchar_t> sep)
+    -> tuple_join_view<wchar_t, Tuple> {
+  return {tuple, sep};
+}
+
 template <typename Char, FMT_ENABLE_IF(!std::is_same<Char, char>::value)>
-auto vformat(basic_string_view<Char> format_str,
+auto vformat(basic_string_view<Char> fmt,
-             basic_format_args<buffer_context<type_identity_t<Char>>> args)
+             typename detail::vformat_args<Char>::type args)
     -> std::basic_string<Char> {
   auto buf = basic_memory_buffer<Char>();
-  detail::vformat_to(buf, format_str, args);
+  detail::vformat_to(buf, fmt, args);
-  return to_string(buf);
+  return {buf.data(), buf.size()};
 }
 
 template <typename... T>
@@ -110,110 +173,122 @@ auto format(wformat_string<T...> fmt, T&&... args) -> std::wstring {
   return vformat(fmt::wstring_view(fmt), fmt::make_wformat_args(args...));
 }
 
+template <typename OutputIt, typename... T>
+auto format_to(OutputIt out, wformat_string<T...> fmt, T&&... args)
+    -> OutputIt {
+  return vformat_to(out, fmt::wstring_view(fmt),
+                    fmt::make_wformat_args(args...));
+}
+
 // Pass char_t as a default template parameter instead of using
 // std::basic_string<char_t<S>> to reduce the symbol size.
-template <typename S, typename... T, typename Char = char_t<S>,
+template <typename S, typename... T,
+          typename Char = detail::format_string_char_t<S>,
           FMT_ENABLE_IF(!std::is_same<Char, char>::value &&
                         !std::is_same<Char, wchar_t>::value)>
-auto format(const S& format_str, T&&... args) -> std::basic_string<Char> {
+auto format(const S& fmt, T&&... args) -> std::basic_string<Char> {
-  return vformat(detail::to_string_view(format_str),
+  return vformat(detail::to_string_view(fmt),
-                 fmt::make_format_args<buffer_context<Char>>(args...));
+                 fmt::make_format_args<buffered_context<Char>>(args...));
 }
 
-template <typename Locale, typename S, typename Char = char_t<S>,
+template <typename Locale, typename S,
+          typename Char = detail::format_string_char_t<S>,
           FMT_ENABLE_IF(detail::is_locale<Locale>::value&&
                             detail::is_exotic_char<Char>::value)>
-inline auto vformat(
+inline auto vformat(const Locale& loc, const S& fmt,
-    const Locale& loc, const S& format_str,
+                    typename detail::vformat_args<Char>::type args)
-    basic_format_args<buffer_context<type_identity_t<Char>>> args)
     -> std::basic_string<Char> {
-  return detail::vformat(loc, detail::to_string_view(format_str), args);
+  auto buf = basic_memory_buffer<Char>();
+  detail::vformat_to(buf, detail::to_string_view(fmt), args,
+                     detail::locale_ref(loc));
+  return {buf.data(), buf.size()};
 }
 
-template <typename Locale, typename S, typename... T, typename Char = char_t<S>,
+template <typename Locale, typename S, typename... T,
+          typename Char = detail::format_string_char_t<S>,
           FMT_ENABLE_IF(detail::is_locale<Locale>::value&&
                             detail::is_exotic_char<Char>::value)>
-inline auto format(const Locale& loc, const S& format_str, T&&... args)
+inline auto format(const Locale& loc, const S& fmt, T&&... args)
     -> std::basic_string<Char> {
-  return detail::vformat(loc, detail::to_string_view(format_str),
+  return vformat(loc, detail::to_string_view(fmt),
-                         fmt::make_format_args<buffer_context<Char>>(args...));
+                 fmt::make_format_args<buffered_context<Char>>(args...));
 }
 
-template <typename OutputIt, typename S, typename Char = char_t<S>,
+template <typename OutputIt, typename S,
+          typename Char = detail::format_string_char_t<S>,
           FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
                             detail::is_exotic_char<Char>::value)>
-auto vformat_to(OutputIt out, const S& format_str,
+auto vformat_to(OutputIt out, const S& fmt,
-                basic_format_args<buffer_context<type_identity_t<Char>>> args)
+                typename detail::vformat_args<Char>::type args) -> OutputIt {
-    -> OutputIt {
   auto&& buf = detail::get_buffer<Char>(out);
-  detail::vformat_to(buf, detail::to_string_view(format_str), args);
+  detail::vformat_to(buf, detail::to_string_view(fmt), args);
   return detail::get_iterator(buf, out);
 }
 
 template <typename OutputIt, typename S, typename... T,
-          typename Char = char_t<S>,
+          typename Char = detail::format_string_char_t<S>,
-          FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
+          FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value &&
-                            detail::is_exotic_char<Char>::value)>
+                        !std::is_same<Char, char>::value &&
+                        !std::is_same<Char, wchar_t>::value)>
 inline auto format_to(OutputIt out, const S& fmt, T&&... args) -> OutputIt {
   return vformat_to(out, detail::to_string_view(fmt),
-                    fmt::make_format_args<buffer_context<Char>>(args...));
+                    fmt::make_format_args<buffered_context<Char>>(args...));
 }
 
 template <typename Locale, typename S, typename OutputIt, typename... Args,
-          typename Char = char_t<S>,
+          typename Char = detail::format_string_char_t<S>,
           FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
                             detail::is_locale<Locale>::value&&
                                 detail::is_exotic_char<Char>::value)>
-inline auto vformat_to(
+inline auto vformat_to(OutputIt out, const Locale& loc, const S& fmt,
-    OutputIt out, const Locale& loc, const S& format_str,
+                       typename detail::vformat_args<Char>::type args)
-    basic_format_args<buffer_context<type_identity_t<Char>>> args) -> OutputIt {
+    -> OutputIt {
   auto&& buf = detail::get_buffer<Char>(out);
-  vformat_to(buf, detail::to_string_view(format_str), args,
+  vformat_to(buf, detail::to_string_view(fmt), args, detail::locale_ref(loc));
-             detail::locale_ref(loc));
   return detail::get_iterator(buf, out);
 }
 
-template <typename OutputIt, typename Locale, typename S, typename... T,
+template <typename Locale, typename OutputIt, typename S, typename... T,
-          typename Char = char_t<S>,
+          typename Char = detail::format_string_char_t<S>,
           bool enable = detail::is_output_iterator<OutputIt, Char>::value &&
                         detail::is_locale<Locale>::value &&
                         detail::is_exotic_char<Char>::value>
-inline auto format_to(OutputIt out, const Locale& loc, const S& format_str,
+inline auto format_to(OutputIt out, const Locale& loc, const S& fmt,
                       T&&... args) ->
     typename std::enable_if<enable, OutputIt>::type {
-  return vformat_to(out, loc, detail::to_string_view(format_str),
+  return vformat_to(out, loc, detail::to_string_view(fmt),
-                    fmt::make_format_args<buffer_context<Char>>(args...));
+                    fmt::make_format_args<buffered_context<Char>>(args...));
 }
 
 template <typename OutputIt, typename Char, typename... Args,
           FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
                             detail::is_exotic_char<Char>::value)>
-inline auto vformat_to_n(
+inline auto vformat_to_n(OutputIt out, size_t n, basic_string_view<Char> fmt,
-    OutputIt out, size_t n, basic_string_view<Char> format_str,
+                         typename detail::vformat_args<Char>::type args)
-    basic_format_args<buffer_context<type_identity_t<Char>>> args)
     -> format_to_n_result<OutputIt> {
   using traits = detail::fixed_buffer_traits;
   auto buf = detail::iterator_buffer<OutputIt, Char, traits>(out, n);
-  detail::vformat_to(buf, format_str, args);
+  detail::vformat_to(buf, fmt, args);
   return {buf.out(), buf.count()};
 }
 
 template <typename OutputIt, typename S, typename... T,
-          typename Char = char_t<S>,
+          typename Char = detail::format_string_char_t<S>,
           FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
                             detail::is_exotic_char<Char>::value)>
 inline auto format_to_n(OutputIt out, size_t n, const S& fmt, T&&... args)
     -> format_to_n_result<OutputIt> {
-  return vformat_to_n(out, n, detail::to_string_view(fmt),
+  return vformat_to_n(out, n, fmt::basic_string_view<Char>(fmt),
-                      fmt::make_format_args<buffer_context<Char>>(args...));
+                      fmt::make_format_args<buffered_context<Char>>(args...));
 }
 
-template <typename S, typename... T, typename Char = char_t<S>,
+template <typename S, typename... T,
+          typename Char = detail::format_string_char_t<S>,
           FMT_ENABLE_IF(detail::is_exotic_char<Char>::value)>
 inline auto formatted_size(const S& fmt, T&&... args) -> size_t {
   auto buf = detail::counting_buffer<Char>();
   detail::vformat_to(buf, detail::to_string_view(fmt),
-                     fmt::make_format_args<buffer_context<Char>>(args...));
+                     fmt::make_format_args<buffered_context<Char>>(args...));
   return buf.count();
 }
 
@@ -247,9 +322,48 @@ template <typename... T> void println(wformat_string<T...> fmt, T&&... args) {
   return print(L"{}\n", fmt::format(fmt, std::forward<T>(args)...));
 }
 
-/**
+inline auto vformat(const text_style& ts, wstring_view fmt, wformat_args args)
-  Converts *value* to ``std::wstring`` using the default format for type *T*.
+    -> std::wstring {
- */
+  auto buf = wmemory_buffer();
+  detail::vformat_to(buf, ts, fmt, args);
+  return {buf.data(), buf.size()};
+}
+
+template <typename... T>
+inline auto format(const text_style& ts, wformat_string<T...> fmt, T&&... args)
+    -> std::wstring {
+  return fmt::vformat(ts, fmt, fmt::make_wformat_args(args...));
+}
+
+template <typename... T>
+FMT_DEPRECATED void print(std::FILE* f, const text_style& ts,
+                          wformat_string<T...> fmt, const T&... args) {
+  vprint(f, ts, fmt, fmt::make_wformat_args(args...));
+}
+
+template <typename... T>
+FMT_DEPRECATED void print(const text_style& ts, wformat_string<T...> fmt,
+                          const T&... args) {
+  return print(stdout, ts, fmt, args...);
+}
+
+inline void vprint(std::wostream& os, wstring_view fmt, wformat_args args) {
+  auto buffer = basic_memory_buffer<wchar_t>();
+  detail::vformat_to(buffer, fmt, args);
+  detail::write_buffer(os, buffer);
+}
+
+template <typename... T>
+void print(std::wostream& os, wformat_string<T...> fmt, T&&... args) {
+  vprint(os, fmt, fmt::make_format_args<buffered_context<wchar_t>>(args...));
+}
+
+template <typename... T>
+void println(std::wostream& os, wformat_string<T...> fmt, T&&... args) {
+  print(os, L"{}\n", fmt::format(fmt, std::forward<T>(args)...));
+}
+
+/// Converts `value` to `std::wstring` using the default format for type `T`.
 template <typename T> inline auto to_wstring(const T& value) -> std::wstring {
   return format(FMT_STRING(L"{}"), value);
 }

3rdparty/fmt/src/fmt.cc

@@ -1,38 +1,57 @@
 module;
 
+#ifdef _MSVC_LANG
+#  define FMT_CPLUSPLUS _MSVC_LANG
+#else
+#  define FMT_CPLUSPLUS __cplusplus
+#endif
+
 // Put all implementation-provided headers into the global module fragment
 // to prevent attachment to this module.
-#include <algorithm>
+#ifndef FMT_IMPORT_STD
+#  include <algorithm>
+#  include <bitset>
+#  include <chrono>
+#  include <cmath>
+#  include <complex>
+#  include <cstddef>
+#  include <cstdint>
+#  include <cstdio>
+#  include <cstdlib>
+#  include <cstring>
+#  include <ctime>
+#  include <exception>
+#  if FMT_CPLUSPLUS > 202002L
+#    include <expected>
+#  endif
+#  include <filesystem>
+#  include <fstream>
+#  include <functional>
+#  include <iterator>
+#  include <limits>
+#  include <locale>
+#  include <memory>
+#  include <optional>
+#  include <ostream>
+#  include <source_location>
+#  include <stdexcept>
+#  include <string>
+#  include <string_view>
+#  include <system_error>
+#  include <thread>
+#  include <type_traits>
+#  include <typeinfo>
+#  include <utility>
+#  include <variant>
+#  include <vector>
+#else
+#  include <limits.h>
+#  include <stdint.h>
+#  include <stdio.h>
+#  include <time.h>
+#endif
 #include <cerrno>
-#include <chrono>
 #include <climits>
-#include <cmath>
-#include <cstddef>
-#include <cstdint>
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
-#include <ctime>
-#include <exception>
-#include <filesystem>
-#include <fstream>
-#include <functional>
-#include <iterator>
-#include <limits>
-#include <locale>
-#include <memory>
-#include <optional>
-#include <ostream>
-#include <stdexcept>
-#include <string>
-#include <string_view>
-#include <system_error>
-#include <thread>
-#include <type_traits>
-#include <typeinfo>
-#include <utility>
-#include <variant>
-#include <vector>
 #include <version>
 
 #if __has_include(<cxxabi.h>)
@@ -70,6 +89,10 @@ module;
 
 export module fmt;
 
+#ifdef FMT_IMPORT_STD
+import std;
+#endif
+
 #define FMT_EXPORT export
 #define FMT_BEGIN_EXPORT export {
 #define FMT_END_EXPORT }
@@ -83,6 +106,10 @@ export module fmt;
 extern "C++" {
 #endif
 
+#ifndef FMT_OS
+#  define FMT_OS 1
+#endif
+
 // All library-provided declarations and definitions must be in the module
 // purview to be exported.
 #include "fmt/args.h"
@@ -90,8 +117,12 @@ extern "C++" {
 #include "fmt/color.h"
 #include "fmt/compile.h"
 #include "fmt/format.h"
-#include "fmt/os.h"
+#if FMT_OS
+#  include "fmt/os.h"
+#endif
+#include "fmt/ostream.h"
 #include "fmt/printf.h"
+#include "fmt/ranges.h"
 #include "fmt/std.h"
 #include "fmt/xchar.h"
 
@@ -104,5 +135,17 @@ extern "C++" {
 module :private;
 #endif
 
-#include "format.cc"
+#ifdef FMT_ATTACH_TO_GLOBAL_MODULE
-#include "os.cc"
+extern "C++" {
+#endif
+
+#if FMT_HAS_INCLUDE("format.cc")
+#  include "format.cc"
+#endif
+#if FMT_OS && FMT_HAS_INCLUDE("os.cc")
+#  include "os.cc"
+#endif
+
+#ifdef FMT_ATTACH_TO_GLOBAL_MODULE
+}
+#endif

3rdparty/fmt/src/format.cc

@@ -15,7 +15,8 @@ template FMT_API auto dragonbox::to_decimal(float x) noexcept
 template FMT_API auto dragonbox::to_decimal(double x) noexcept
     -> dragonbox::decimal_fp<double>;
 
-#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
+#if FMT_USE_LOCALE
+// DEPRECATED! locale_ref in the detail namespace
 template FMT_API locale_ref::locale_ref(const std::locale& loc);
 template FMT_API auto locale_ref::get<std::locale>() const -> std::locale;
 #endif
@@ -26,8 +27,10 @@ template FMT_API auto thousands_sep_impl(locale_ref)
     -> thousands_sep_result<char>;
 template FMT_API auto decimal_point_impl(locale_ref) -> char;
 
+// DEPRECATED!
 template FMT_API void buffer<char>::append(const char*, const char*);
 
+// DEPRECATED!
 template FMT_API void vformat_to(buffer<char>&, string_view,
                                  typename vformat_args<>::type, locale_ref);
 

3rdparty/fmt/src/os.cc

@@ -12,47 +12,51 @@
 
 #include "fmt/os.h"
 
-#include <climits>
+#ifndef FMT_MODULE
+#  include <climits>
 
-#if FMT_USE_FCNTL
+#  if FMT_USE_FCNTL
-#  include <sys/stat.h>
+#    include <sys/stat.h>
-#  include <sys/types.h>
+#    include <sys/types.h>
 
-#  ifdef _WRS_KERNEL    // VxWorks7 kernel
+#    ifdef _WRS_KERNEL    // VxWorks7 kernel
-#    include <ioLib.h>  // getpagesize
+#      include <ioLib.h>  // getpagesize
+#    endif
+
+#    ifndef _WIN32
+#      include <unistd.h>
+#    else
+#      ifndef WIN32_LEAN_AND_MEAN
+#        define WIN32_LEAN_AND_MEAN
+#      endif
+#      include <io.h>
+#    endif  // _WIN32
+#  endif    // FMT_USE_FCNTL
+
+#  ifdef _WIN32
+#    include <windows.h>
 #  endif
-
+#endif
-#  ifndef _WIN32
-#    include <unistd.h>
-#  else
-#    ifndef WIN32_LEAN_AND_MEAN
-#      define WIN32_LEAN_AND_MEAN
-#    endif
-#    include <io.h>
-
-#    ifndef S_IRUSR
-#      define S_IRUSR _S_IREAD
-#    endif
-#    ifndef S_IWUSR
-#      define S_IWUSR _S_IWRITE
-#    endif
-#    ifndef S_IRGRP
-#      define S_IRGRP 0
-#    endif
-#    ifndef S_IWGRP
-#      define S_IWGRP 0
-#    endif
-#    ifndef S_IROTH
-#      define S_IROTH 0
-#    endif
-#    ifndef S_IWOTH
-#      define S_IWOTH 0
-#    endif
-#  endif  // _WIN32
-#endif    // FMT_USE_FCNTL
 
 #ifdef _WIN32
-#  include <windows.h>
+#  ifndef S_IRUSR
+#    define S_IRUSR _S_IREAD
+#  endif
+#  ifndef S_IWUSR
+#    define S_IWUSR _S_IWRITE
+#  endif
+#  ifndef S_IRGRP
+#    define S_IRGRP 0
+#  endif
+#  ifndef S_IWGRP
+#    define S_IWGRP 0
+#  endif
+#  ifndef S_IROTH
+#    define S_IROTH 0
+#  endif
+#  ifndef S_IWOTH
+#    define S_IWOTH 0
+#  endif
 #endif
 
 namespace {
@@ -156,7 +160,7 @@ void detail::format_windows_error(detail::buffer<char>& out, int error_code,
 }
 
 void report_windows_error(int error_code, const char* message) noexcept {
-  report_error(detail::format_windows_error, error_code, message);
+  do_report_error(detail::format_windows_error, error_code, message);
 }
 #endif  // _WIN32
 
@@ -182,12 +186,14 @@ void buffered_file::close() {
 }
 
 int buffered_file::descriptor() const {
-#if !defined(fileno)
+#ifdef FMT_HAS_SYSTEM
+  // fileno is a macro on OpenBSD.
+#  ifdef fileno
+#    undef fileno
+#  endif
   int fd = FMT_POSIX_CALL(fileno(file_));
-#elif defined(FMT_HAS_SYSTEM)
+#elif defined(_WIN32)
-  // fileno is a macro on OpenBSD so we cannot use FMT_POSIX_CALL.
+  int fd = _fileno(file_);
-#  define FMT_DISABLE_MACRO
-  int fd = FMT_SYSTEM(fileno FMT_DISABLE_MACRO(file_));
 #else
   int fd = fileno(file_);
 #endif
@@ -200,6 +206,7 @@ int buffered_file::descriptor() const {
 #  ifdef _WIN32
 using mode_t = int;
 #  endif
+
 constexpr mode_t default_open_mode =
     S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
 
@@ -301,29 +308,6 @@ void file::dup2(int fd, std::error_code& ec) noexcept {
   if (result == -1) ec = std::error_code(errno, std::generic_category());
 }
 
-void file::pipe(file& read_end, file& write_end) {
-  // Close the descriptors first to make sure that assignments don't throw
-  // and there are no leaks.
-  read_end.close();
-  write_end.close();
-  int fds[2] = {};
-#  ifdef _WIN32
-  // Make the default pipe capacity same as on Linux 2.6.11+.
-  enum { DEFAULT_CAPACITY = 65536 };
-  int result = FMT_POSIX_CALL(pipe(fds, DEFAULT_CAPACITY, _O_BINARY));
-#  else
-  // Don't retry as the pipe function doesn't return EINTR.
-  // http://pubs.opengroup.org/onlinepubs/009696799/functions/pipe.html
-  int result = FMT_POSIX_CALL(pipe(fds));
-#  endif
-  if (result != 0)
-    FMT_THROW(system_error(errno, FMT_STRING("cannot create pipe")));
-  // The following assignments don't throw because read_fd and write_fd
-  // are closed.
-  read_end = file(fds[0]);
-  write_end = file(fds[1]);
-}
-
 buffered_file file::fdopen(const char* mode) {
 // Don't retry as fdopen doesn't return EINTR.
 #  if defined(__MINGW32__) && defined(_POSIX_)
@@ -352,6 +336,24 @@ file file::open_windows_file(wcstring_view path, int oflag) {
 }
 #  endif
 
+pipe::pipe() {
+  int fds[2] = {};
+#  ifdef _WIN32
+  // Make the default pipe capacity same as on Linux 2.6.11+.
+  enum { DEFAULT_CAPACITY = 65536 };
+  int result = FMT_POSIX_CALL(pipe(fds, DEFAULT_CAPACITY, _O_BINARY));
+#  else
+  // Don't retry as the pipe function doesn't return EINTR.
+  // http://pubs.opengroup.org/onlinepubs/009696799/functions/pipe.html
+  int result = FMT_POSIX_CALL(pipe(fds));
+#  endif
+  if (result != 0)
+    FMT_THROW(system_error(errno, FMT_STRING("cannot create pipe")));
+  // The following assignments don't throw.
+  read_end = file(fds[0]);
+  write_end = file(fds[1]);
+}
+
 #  if !defined(__MSDOS__)
 long getpagesize() {
 #    ifdef _WIN32
@@ -372,31 +374,25 @@ long getpagesize() {
 }
 #  endif
 
-namespace detail {
+void ostream::grow(buffer<char>& buf, size_t) {
-
+  if (buf.size() == buf.capacity()) static_cast<ostream&>(buf).flush();
-void file_buffer::grow(size_t) {
-  if (this->size() == this->capacity()) flush();
 }
 
-file_buffer::file_buffer(cstring_view path,
+ostream::ostream(cstring_view path, const detail::ostream_params& params)
-                         const detail::ostream_params& params)
+    : buffer<char>(grow), file_(path, params.oflag) {
-    : file_(path, params.oflag) {
   set(new char[params.buffer_size], params.buffer_size);
 }
 
-file_buffer::file_buffer(file_buffer&& other)
+ostream::ostream(ostream&& other) noexcept
-    : detail::buffer<char>(other.data(), other.size(), other.capacity()),
+    : buffer<char>(grow, other.data(), other.size(), other.capacity()),
       file_(std::move(other.file_)) {
   other.clear();
   other.set(nullptr, 0);
 }
 
-file_buffer::~file_buffer() {
+ostream::~ostream() {
   flush();
   delete[] data();
 }
-}  // namespace detail
-
-ostream::~ostream() = default;
 #endif  // FMT_USE_FCNTL
 FMT_END_NAMESPACE

bin/resources/GameIndex.yaml

@@ -33957,6 +33957,8 @@ SLPM-61030:
   region: "NTSC-J"
   gsHWFixes:
     recommendedBlendingLevel: 2 # Fixes text box opacity.
+  clampModes:
+    vu1ClampMode: 3 # Fixes shading on Chapter 11-2's enemy.
 SLPM-61031:
   name: "電撃PS2 / 電撃PlayStation D52"
   name-sort: "でんげき PS2 でんげきPlayStation D52"
@@ -39516,6 +39518,8 @@ SLPM-65140:
   region: "NTSC-J"
   gsHWFixes:
     recommendedBlendingLevel: 2 # Fixes text box opacity.
+  clampModes:
+    vu1ClampMode: 3 # Fixes shading on Chapter 11-2's enemy.
 SLPM-65141:
   name: "続せがれいじり 変珍たませがれ"
   name-sort: "ぞくせがれいじり へんちんたませがれ"
@@ -49740,10 +49744,12 @@ SLPM-66852:
 SLPM-66853:
   name: "ジョジョの奇妙な冒険 黄金の旋風 [Best Price]"
   name-sort: "じょじょのきみょうなぼうけん おうごんのせんぷう [Best Price]"
-  name-en: "Jojo no Kimyouna Bouken - Ougon no Kaze [Best Price]"
+  name-en: "JoJo no Kimyou na Bouken - Ougon no Kaze [Best Price]"
   region: "NTSC-J"
   gsHWFixes:
     recommendedBlendingLevel: 2 # Fixes text box opacity.
+  clampModes:
+    vu1ClampMode: 3 # Fixes shading on Chapter 11-2's enemy.
 SLPM-66854:
   name: "ストリートファイターゼロ ファイターズ ジェネレーション [Best Price]"
   name-sort: "すとりーとふぁいたーぜろ ふぁいたーず じぇねれーしょん [Best Price]"
@@ -58419,7 +58425,7 @@ SLPS-25685:
 SLPS-25686:
   name: "ジョジョの奇妙な冒険 ファントムブラッド"
   name-sort: "じょじょのきみょうなぼうけん ふぁんとむぶらっど"
-  name-en: "Jojo no Kimyou na Bouken - Phantom Blood"
+  name-en: "JoJo no Kimyou na Bouken - Phantom Blood"
   region: "NTSC-J"
   gsHWFixes:
     halfPixelOffset: 4 # Fixes post positioning.

cmake/SearchForStuff.cmake

@@ -125,7 +125,7 @@ elseif(_M_ARM64)
 endif()
 
 # Prevent fmt from being built with exceptions, or being thrown at call sites.
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DFMT_EXCEPTIONS=0")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DFMT_USE_EXCEPTIONS=0 -DFMT_USE_RTTI=0")
 add_subdirectory(3rdparty/fmt EXCLUDE_FROM_ALL)
 
 # Deliberately at the end. We don't want to set the flag on third-party projects.

common/Assertions.cpp

@@ -7,7 +7,6 @@
 #include "Threading.h"
 
 #include <mutex>
-#include "fmt/core.h"
 
 #ifdef _WIN32
 #include "RedtapeWindows.h"

common/Console.h

@@ -5,7 +5,7 @@
 
 #include "Pcsx2Defs.h"
 
-#include "fmt/core.h"
+#include "fmt/base.h"
 
 #include <cstdarg>
 #include <string>

common/Error.h

@@ -5,7 +5,7 @@
 
 #include "Pcsx2Defs.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include <string>
 

common/Linux/LnxHostSys.cpp

@@ -17,7 +17,7 @@
 #include <ucontext.h>
 #include <unistd.h>
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #if defined(__FreeBSD__)
 #include "cpuinfo.h"

common/Linux/LnxMisc.cpp

@@ -11,7 +11,7 @@
 #include "common/Threading.h"
 #include "common/WindowInfo.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include <ctype.h>
 #include <time.h>

common/SmallString.h

@@ -5,11 +5,12 @@
 
 #include "Pcsx2Defs.h"
 
-#include "fmt/core.h"
+#include "fmt/base.h"
 
 #include <algorithm>
 #include <cstdarg>
 #include <cstring>
+#include <iterator>
 #include <limits>
 #include <string>
 #include <string_view>
@@ -177,7 +178,7 @@ public:
 	__fi const char* end_ptr() const { return m_buffer + m_length; }
 
 	// STL adapters
-	__fi void push_back(value_type&& val) { append(val); }
+	__fi void push_back(value_type val) { append(val); }
 
 	// returns a string view for this string
 	std::string_view view() const;
@@ -413,7 +414,7 @@ __fi void SmallStringBase::format(fmt::format_string<T...> fmt, T&&... args)
 		} \
 \
 		template <typename FormatContext> \
-		auto format(const type& str, FormatContext& ctx) \
+		auto format(const type& str, FormatContext& ctx) const \
 		{ \
 			return fmt::format_to(ctx.out(), "{}", str.view()); \
 		} \

common/StringUtil.cpp

@@ -10,7 +10,7 @@
 #include <sstream>
 #include <algorithm>
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #ifdef _WIN32
 #include "RedtapeWindows.h"

common/Windows/WinHostSys.cpp

@@ -10,7 +10,6 @@
 #include "common/RedtapeWindows.h"
 #include "common/StringUtil.h"
 
-#include "fmt/core.h"
 #include "fmt/format.h"
 
 #include <mutex>

common/Windows/WinMisc.cpp

@@ -8,8 +8,6 @@
 #include "common/Threading.h"
 #include "common/WindowInfo.h"
 
-#include "fmt/core.h"
-
 #include <mmsystem.h>
 #include <timeapi.h>
 #include <VersionHelpers.h>

pcsx2-gsrunner/Main.cpp

@@ -13,7 +13,7 @@
 #include "common/RedtapeWindows.h"
 #endif
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include "common/Assertions.h"
 #include "common/Console.h"

pcsx2-gsrunner/test_check_dumps.py

@@ -113,8 +113,15 @@ def check_regression_test(baselinedir, testdir, name):
         path2 = os.path.join(dir2, imagename)
         if not os.path.isfile(path2):
             print("--- Frame %u for %s is missing in test set" % (framenum, name))
-            write("<h1>{}</h1>".format(name))
+            if first_fail:
-            write("<pre>--- Frame %u for %s is missing in test set</pre>" % (framenum, name))
+                write("<h1>{}</h1>".format(name))
+                
+            if first_fail == False:
+                write("</table>")
+                write("<pre>--- Frame %u for %s is missing in test set</pre>" % (framenum, name))
+                write("</div>")
+            else:
+                 write("<pre>--- Frame %u for %s is missing in test set</pre>" % (framenum, name))
             return False
 
         if not compare_frames(path1, path2):

pcsx2-qt/Debugger/DebuggerSettingsManager.cpp

@@ -9,7 +9,6 @@
 #include <QtCore/QFile>
 
 #include "common/Console.h"
-#include "fmt/core.h"
 #include "VMManager.h"
 #include "Models/BreakpointModel.h"
 

pcsx2-qt/QtHost.cpp

@@ -51,7 +51,7 @@
 #include <QtGui/QClipboard>
 #include <QtGui/QInputMethod>
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include <cmath>
 #include <csignal>

pcsx2/CDVD/CDVDcommon.cpp

@@ -23,7 +23,7 @@
 #include <memory>
 #include <time.h>
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 // TODO: FIXME! Should be platform specific.
 #ifdef _WIN32

pcsx2/CDVD/IsoHasher.cpp

@@ -9,7 +9,7 @@
 #include "common/MD5Digest.h"
 #include "common/StringUtil.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include <algorithm>
 

pcsx2/CDVD/OutputIsoFile.cpp

@@ -8,7 +8,7 @@
 #include "common/FileSystem.h"
 #include "common/StringUtil.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include <errno.h>
 

pcsx2/DEV9/Win32/tap-win32.cpp

@@ -5,7 +5,7 @@
 #include "common/RedtapeWilCom.h"
 #include "common/StringUtil.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include <stdio.h>
 #include <WinSock2.h>

pcsx2/GS/Renderers/Common/GSRenderer.cpp

@@ -21,7 +21,7 @@
 #include "common/StringUtil.h"
 #include "common/Timer.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 #include "IconsFontAwesome5.h"
 
 #include <algorithm>

pcsx2/GSDumpReplayer.cpp

@@ -16,7 +16,7 @@
 
 #include "imgui.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include "common/Error.h"
 #include "common/FileSystem.h"

pcsx2/GameDatabase.cpp

@@ -18,7 +18,7 @@
 #include <sstream>
 #include "ryml_std.hpp"
 #include "ryml.hpp"
-#include "fmt/core.h"
+#include "fmt/format.h"
 #include "fmt/ranges.h"
 #include <fstream>
 #include <mutex>

pcsx2/Hw.cpp

@@ -9,7 +9,7 @@
 
 #include "common/WrappedMemCopy.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 using namespace R5900;
 

pcsx2/ImGui/FullscreenUI.cpp

@@ -47,7 +47,7 @@
 #include "imgui_internal.h"
 
 #include "fmt/chrono.h"
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include <array>
 #include <bitset>

pcsx2/ImGui/ImGuiFullscreen.cpp

@@ -3,7 +3,7 @@
 
 #define IMGUI_DEFINE_MATH_OPERATORS
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 #include "Host.h"
 #include "GS/Renderers/Common/GSDevice.h"
 #include "GS/Renderers/Common/GSTexture.h"

pcsx2/ImGui/ImGuiManager.cpp

@@ -23,7 +23,7 @@
 #include "common/Path.h"
 #include "common/Timer.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 #include "imgui.h"
 #include "imgui_internal.h"
 #include "common/Image.h"

pcsx2/Input/InputManager.cpp

@@ -16,7 +16,7 @@
 
 #include "IconsPromptFont.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include <array>
 #include <atomic>

pcsx2/Input/XInputSource.cpp

@@ -10,6 +10,8 @@
 
 #include "IconsPromptFont.h"
 
+#include "fmt/format.h"
+
 #include <cmath>
 
 static const char* s_axis_names[XInputSource::NUM_AXES] = {

pcsx2/PrecompiledHeader.h

@@ -43,5 +43,5 @@
 // We use fmt a fair bit now.
 // fmt pch breaks GCC in debug builds: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114370
 #if !defined(__GNUC__) || defined(__clang__)
-#include "fmt/core.h"
+#include "fmt/format.h"
 #endif

pcsx2/Recording/PadData.cpp

@@ -7,7 +7,7 @@
 #include "SIO/Pad/PadDualshock2.h"
 #include "SIO/Sio.h"
 
-#include <fmt/core.h>
+#include "fmt/format.h"
 
 PadData::PadData(const int port, const int slot)
 {

pcsx2/Recording/Utilities/InputRecordingLogger.cpp

@@ -10,7 +10,7 @@
 #include "GS.h"
 #include "Host.h"
 
-#include <fmt/core.h>
+#include "fmt/format.h"
 
 namespace InputRec
 {

pcsx2/SIO/Memcard/MemoryCardFile.cpp

@@ -20,7 +20,7 @@
 #include "Host.h"
 #include "IconsPromptFont.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include <map>
 

pcsx2/SIO/Memcard/MemoryCardFolder.cpp

@@ -17,7 +17,7 @@
 #include "common/StringUtil.h"
 #include "common/Timer.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 #include "ryml_std.hpp"
 #include "ryml.hpp"
 

pcsx2/SIO/Memcard/MemoryCardFolder.h

@@ -10,8 +10,6 @@
 
 #include "Config.h"
 
-#include "fmt/core.h"
-
 //#define DEBUG_WRITE_FOLDER_CARD_IN_MEMORY_TO_FILE_ON_CHANGE
 
 // --------------------------------------------------------------------------------------

pcsx2/SaveState.cpp

@@ -37,7 +37,7 @@
 #include "common/StringUtil.h"
 #include "common/ZipHelpers.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include <csetjmp>
 #include <png.h>

pcsx2/SourceLog.cpp

@@ -13,7 +13,7 @@
 #include "R3000A.h"
 #include "R5900.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include <cctype>
 #include <cstdarg>

pcsx2/VMManager.cpp

@@ -57,7 +57,7 @@
 #include "IconsPromptFont.h"
 #include "cpuinfo.h"
 #include "discord_rpc.h"
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include <atomic>
 #include <mutex>

pcsx2/Vif_HashBucket.h

@@ -4,7 +4,6 @@
 #pragma once
 
 #include <array>
-#include "fmt/core.h"
 #include "common/AlignedMalloc.h"
 
 // nVifBlock - Ordered for Hashing; the 'num' and 'upkType' fields are

pcsx2/ps2/Iop/IopHw_Internal.h

@@ -6,7 +6,7 @@
 #include "Common.h"
 #include "IopHw.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 namespace IopMemory {
 namespace Internal {

pcsx2/ps2/Iop/PsxBios.cpp

@@ -5,7 +5,7 @@
 #include "R3000A.h"
 #include "IopMem.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 static std::string psxout_buf;
 

pcsx2/ps2/eeHwTraceLog.inl

@@ -3,7 +3,7 @@
 
 #pragma once
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #define eeAddrInRange(name, addr) \
 	(addr >= EEMemoryMap::name##_Start && addr < EEMemoryMap::name##_End)

pcsx2/vtlb.cpp

@@ -27,7 +27,7 @@
 #include "common/BitUtils.h"
 #include "common/Error.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #include <bit>
 #ifdef _M_X86

pcsx2/x86/Vif_Dynarec.cpp

@@ -5,7 +5,6 @@
 #include "MTVU.h"
 #include "common/Perf.h"
 #include "common/StringUtil.h"
-#include "fmt/core.h"
 
 void dVifReset(int idx)
 {

pcsx2/x86/Vif_UnpackSSE.cpp

@@ -3,7 +3,6 @@
 
 #include "Vif_UnpackSSE.h"
 #include "common/Perf.h"
-#include "fmt/core.h"
 
 #define xMOV8(regX, loc)   xMOVSSZX(regX, loc)
 #define xMOV16(regX, loc)  xMOVSSZX(regX, loc)

pcsx2/x86/iR3000A.cpp

@@ -26,8 +26,6 @@
 #include "common/Perf.h"
 #include "DebugTools/Breakpoints.h"
 
-#include "fmt/core.h"
-
 // #define DUMP_BLOCKS 1
 // #define TRACE_BLOCKS 1
 

pcsx2/x86/microVU_Log.inl

@@ -8,7 +8,7 @@
 #include "common/FileSystem.h"
 #include "common/Path.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 // writes text directly to mVU.logFile, no newlines appended.
 _mVUt void __mVULog(const char* fmt, ...)

updater/UpdaterExtractor.h

@@ -7,7 +7,7 @@
 #include "common/ScopedGuard.h"
 #include "common/StringUtil.h"
 
-#include "fmt/core.h"
+#include "fmt/format.h"
 
 #if defined(_WIN32)
 #include "7z.h"