5.0.0 - 2018-05-21 ------------------ * Added a requirement for partial C++11 support, most importantly variadic templates and type traits, and dropped ``FMT_VARIADIC_*`` emulation macros. Variadic templates are available since GCC 4.4, Clang 2.9 and MSVC 18.0 (2013). For older compilers use {fmt} `version 4.x `_ which continues to be maintained and works with C++98 compilers. * Renamed symbols to follow standard C++ naming conventions and proposed a subset of the library for standardization in `P0645R2 Text Formatting `_. * Implemented ``constexpr`` parsing of format strings and `compile-time format string checks `_. For example .. code:: c++ #include std::string s = format(fmt("{:d}"), "foo"); gives a compile-time error because ``d`` is an invalid specifier for strings (`godbolt `__):: ... :4:19: note: in instantiation of function template specialization 'fmt::v5::format' requested here std::string s = format(fmt("{:d}"), "foo"); ^ format.h:1337:13: note: non-constexpr function 'on_error' cannot be used in a constant expression handler.on_error("invalid type specifier"); Compile-time checks require relaxed ``constexpr`` (C++14 feature) support. If the latter is not available, checks will be performed at runtime. * Separated format string parsing and formatting in the extension API to enable compile-time format string processing. For example .. code:: c++ struct Answer {}; namespace fmt { template <> struct formatter { constexpr auto parse(parse_context& ctx) { auto it = ctx.begin(); spec = *it; if (spec != 'd' && spec != 's') throw format_error("invalid specifier"); return ++it; } template auto format(Answer, FormatContext& ctx) { return spec == 's' ? format_to(ctx.begin(), "{}", "fourty-two") : format_to(ctx.begin(), "{}", 42); } char spec = 0; }; } std::string s = format(fmt("{:x}"), Answer()); gives a compile-time error due to invalid format specifier (`godbolt `__):: ... :12:45: error: expression '' is not a constant expression throw format_error("invalid specifier"); * Added `iterator support `_: .. code:: c++ #include #include std::vector out; fmt::format_to(std::back_inserter(out), "{}", 42); * Added the `format_to_n `_ function that restricts the output to the specified number of characters (`#298 `_): .. code:: c++ char out[4]; fmt::format_to_n(out, sizeof(out), "{}", 12345); // out == "1234" (without terminating '\0') * Added the `formatted_size `_ function for computing the output size: .. code:: c++ #include auto size = fmt::formatted_size("{}", 12345); // size == 5 * Improved compile times by reducing dependencies on standard headers and providing a lightweight `core API `_: .. code:: c++ #include fmt::print("The answer is {}.", 42); See `Compile time and code bloat `_. * Added the `make_format_args `_ function for capturing formatting arguments: .. code:: c++ // Prints formatted error message. void vreport_error(const char *format, fmt::format_args args) { fmt::print("Error: "); fmt::vprint(format, args); } template void report_error(const char *format, const Args & ... args) { vreport_error(format, fmt::make_format_args(args...)); } * Added the ``make_printf_args`` function for capturing ``printf`` arguments ( `#687 `_, `#694 `_). Thanks `@Kronuz (Germán Méndez Bravo) `_. * Added prefix ``v`` to non-variadic functions taking ``format_args`` to distinguish them from variadic ones: .. code:: c++ std::string vformat(string_view format_str, format_args args); template std::string format(string_view format_str, const Args & ... args); * Added experimental support for formatting ranges, containers and tuple-like types in ``fmt/ranges.h`` (`#735 `_): .. code:: c++ #include std::vector v = {1, 2, 3}; fmt::print("{}", v); // prints {1, 2, 3} Thanks `@Remotion (Remo) `_. * Implemented ``wchar_t`` date and time formatting (`#712 `_): .. code:: c++ #include std::time_t t = std::time(nullptr); auto s = fmt::format(L"The date is {:%Y-%m-%d}.", *std::localtime(&t)); Thanks `@DanielaE (Daniela Engert) `_. * Provided more wide string overloads (`#724 `_). Thanks `@DanielaE (Daniela Engert) `_. * Switched from a custom null-terminated string view class to ``string_view`` in the format API and provided ``fmt::string_view`` which implements a subset of ``std::string_view`` API for pre-C++17 systems. * Added support for ``std::experimental::string_view`` (`#607 `_): .. code:: c++ #include #include fmt::print("{}", std::experimental::string_view("foo")); Thanks `@virgiliofornazin (Virgilio Alexandre Fornazin) `__. * Allowed mixing named and automatic arguments: .. code:: c++ fmt::format("{} {two}", 1, fmt::arg("two", 2)); * Removed the write API in favor of the `format API `_ with compile-time handling of format strings. * Disallowed formatting of multibyte strings into a wide character target (`#606 `_). * Improved documentation ( `#515 `_, `#614 `_, `#617 `_, `#661 `_, `#680 `_). Thanks `@ibell (Ian Bell) `_, `@mihaitodor (Mihai Todor) `_, and `@johnthagen `_. * Implemented more efficient handling of large number of format arguments. * Introduced an inline namespace for symbol versioning. * Added debug postfix ``d`` to the ``fmt`` library name (`#636 `_). * Removed unnecessary ``fmt/`` prefix in includes (`#397 `_). Thanks `@chronoxor (Ivan Shynkarenka) `_. * Moved ``fmt/*.h`` to ``include/fmt/*.h`` to prevent irrelevant files and directories appearing on the include search paths when fmt is used as a subproject and moved source files to the ``src`` directory. * Added qmake project file ``support/fmt.pro`` (`#641 `_). Thanks `@cowo78 (Giuseppe Corbelli) `_. * Added Gradle build file ``support/build.gradle`` (`#649 `_). Thanks `@luncliff (Park DongHa) `_. * Removed ``FMT_CPPFORMAT`` CMake option. * Fixed a name conflict with the macro ``CHAR_WIDTH`` in glibc (`#616 `_). Thanks `@aroig (Abdó Roig-Maranges) `_. * Fixed handling of nested braces in ``fmt::join`` (`#638 `_). * Added ``SOURCELINK_SUFFIX`` for compatibility with Sphinx 1.5 (`#497 `_). Thanks `@ginggs (Graham Inggs) `_. * Added a missing ``inline`` in the header-only mode (`#626 `_). Thanks `@aroig (Abdó Roig-Maranges) `_. * Fixed various compiler warnings ( `#640 `_, `#656 `_, `#679 `_, `#681 `_, `#705 `__, `#715 `_, `#717 `_, `#720 `_, `#723 `_, `#726 `_, `#730 `_, `#739 `_). Thanks `@peterbell10 `_, `@LarsGullik `_, `@foonathan (Jonathan Müller) `_, `@eliaskosunen (Elias Kosunen) `_, `@christianparpart (Christian Parpart) `_, `@DanielaE (Daniela Engert) `_, and `@mwinterb `_. * Worked around an MSVC bug and fixed several warnings (`#653 `_). Thanks `@alabuzhev (Alex Alabuzhev) `_. * Worked around GCC bug 67371 (`#682 `_). * Fixed compilation with ``-fno-exceptions`` (`#655 `_). Thanks `@chenxiaolong (Andrew Gunnerson) `_. * Made ``constexpr remove_prefix`` gcc version check tighter (`#648 `_). * Renamed internal type enum constants to prevent collision with poorly written C libraries (`#644 `_). * Added detection of ``wostream operator<<`` (`#650 `_). * Fixed compilation on OpenBSD (`#660 `_). Thanks `@hubslave `_. * Fixed compilation on FreeBSD 12 (`#732 `_). Thanks `@dankm `_. * Fixed compilation when there is a mismatch between ``-std`` options between the library and user code (`#664 `_). * Fixed compilation with GCC 7 and ``-std=c++11`` (`#734 `_). * Improved generated binary code on GCC 7 and older (`#668 `_). * Fixed handling of numeric alignment with no width (`#675 `_). * Fixed handling of empty strings in UTF8/16 converters (`#676 `_). Thanks `@vgalka-sl (Vasili Galka) `_. * Fixed formatting of an empty ``string_view`` (`#689 `_). * Fixed detection of ``string_view`` on libc++ (`#686 `_). * Fixed DLL issues (`#696 `_). Thanks `@sebkoenig `_. * Fixed compile checks for mixing narrow and wide strings (`#690 `_). * Disabled unsafe implicit conversion to ``std::string`` (`#729 `_). * Fixed handling of reused format specs (as in ``fmt::join``) for pointers (`#725 `_). Thanks `@mwinterb `_. * Fixed installation of ``fmt/ranges.h`` (`#738 `_). Thanks `@sv1990 `_. 4.1.0 - 2017-12-20 ------------------ * Added ``fmt::to_wstring()`` in addition to ``fmt::to_string()`` (`#559 `_). Thanks `@alabuzhev (Alex Alabuzhev) `_. * Added support for C++17 ``std::string_view`` (`#571 `_ and `#578 `_). Thanks `@thelostt (Mário Feroldi) `_ and `@mwinterb `_. * Enabled stream exceptions to catch errors (`#581 `_). Thanks `@crusader-mike `_. * Allowed formatting of class hierarchies with ``fmt::format_arg()`` (`#547 `_). Thanks `@rollbear (Björn Fahller) `_. * Removed limitations on character types (`#563 `_). Thanks `@Yelnats321 (Elnar Dakeshov) `_. * Conditionally enabled use of ``std::allocator_traits`` (`#583 `_). Thanks `@mwinterb `_. * Added support for ``const`` variadic member function emulation with ``FMT_VARIADIC_CONST`` (`#591 `_). Thanks `@ludekvodicka (Ludek Vodicka) `_. * Various bugfixes: bad overflow check, unsupported implicit type conversion when determining formatting function, test segfaults (`#551 `_), ill-formed macros (`#542 `_) and ambiguous overloads (`#580 `_). Thanks `@xylosper (Byoung-young Lee) `_. * Prevented warnings on MSVC (`#605 `_, `#602 `_, and `#545 `_), clang (`#582 `_), GCC (`#573 `_), various conversion warnings (`#609 `_, `#567 `_, `#553 `_ and `#553 `_), and added ``override`` and ``[[noreturn]]`` (`#549 `_ and `#555 `_). Thanks `@alabuzhev (Alex Alabuzhev) `_, `@virgiliofornazin (Virgilio Alexandre Fornazin) `_, `@alexanderbock (Alexander Bock) `_, `@yumetodo `_, `@VaderY (Császár Mátyás) `_, `@jpcima (JP Cimalando) `_, `@thelostt (Mário Feroldi) `_, and `@Manu343726 (Manu Sánchez) `_. * Improved CMake: Used ``GNUInstallDirs`` to set installation location (`#610 `_) and fixed warnings (`#536 `_ and `#556 `_). Thanks `@mikecrowe (Mike Crowe) `_, `@evgen231 `_ and `@henryiii (Henry Schreiner) `_. 4.0.0 - 2017-06-27 ------------------ * Removed old compatibility headers ``cppformat/*.h`` and CMake options (`#527 `_). Thanks `@maddinat0r (Alex Martin) `_. * Added ``string.h`` containing ``fmt::to_string()`` as alternative to ``std::to_string()`` as well as other string writer functionality (`#326 `_ and `#441 `_): .. code:: c++ #include "fmt/string.h" std::string answer = fmt::to_string(42); Thanks to `@glebov-andrey (Andrey Glebov) `_. * Moved ``fmt::printf()`` to new ``printf.h`` header and allowed ``%s`` as generic specifier (`#453 `_), made ``%.f`` more conformant to regular ``printf()`` (`#490 `_), added custom writer support (`#476 `_) and implemented missing custom argument formatting (`#339 `_ and `#340 `_): .. code:: c++ #include "fmt/printf.h" // %s format specifier can be used with any argument type. fmt::printf("%s", 42); Thanks `@mojoBrendan `_, `@manylegged (Arthur Danskin) `_ and `@spacemoose (Glen Stark) `_. See also `#360 `_, `#335 `_ and `#331 `_. * Added ``container.h`` containing a ``BasicContainerWriter`` to write to containers like ``std::vector`` (`#450 `_). Thanks `@polyvertex (Jean-Charles Lefebvre) `_. * Added ``fmt::join()`` function that takes a range and formats its elements separated by a given string (`#466 `_): .. code:: c++ #include "fmt/format.h" std::vector v = {1.2, 3.4, 5.6}; // Prints "(+01.20, +03.40, +05.60)". fmt::print("({:+06.2f})", fmt::join(v.begin(), v.end(), ", ")); Thanks `@olivier80 `_. * Added support for custom formatting specifications to simplify customization of built-in formatting (`#444 `_). Thanks `@polyvertex (Jean-Charles Lefebvre) `_. See also `#439 `_. * Added ``fmt::format_system_error()`` for error code formatting (`#323 `_ and `#526 `_). Thanks `@maddinat0r (Alex Martin) `_. * Added thread-safe ``fmt::localtime()`` and ``fmt::gmtime()`` as replacement for the standard version to ``time.h`` (`#396 `_). Thanks `@codicodi `_. * Internal improvements to ``NamedArg`` and ``ArgLists`` (`#389 `_ and `#390 `_). Thanks `@chronoxor `_. * Fixed crash due to bug in ``FormatBuf`` (`#493 `_). Thanks `@effzeh `_. See also `#480 `_ and `#491 `_. * Fixed handling of wide strings in ``fmt::StringWriter``. * Improved compiler error messages (`#357 `_). * Fixed various warnings and issues with various compilers (`#494 `_, `#499 `_, `#483 `_, `#485 `_, `#482 `_, `#475 `_, `#473 `_ and `#414 `_). Thanks `@chronoxor `_, `@zhaohuaxishi `_, `@pkestene (Pierre Kestener) `_, `@dschmidt (Dominik Schmidt) `_ and `@0x414c (Alexey Gorishny) `_ . * Improved CMake: targets are now namespaced (`#511 `_ and `#513 `_), supported header-only ``printf.h`` (`#354 `_), fixed issue with minimal supported library subset (`#418 `_, `#419 `_ and `#420 `_). Thanks `@bjoernthiel (Bjoern Thiel) `_, `@niosHD (Mario Werner) `_, `@LogicalKnight (Sean LK) `_ and `@alabuzhev (Alex Alabuzhev) `_. * Improved documentation. Thanks to `@pwm1234 (Phil) `_ for `#393 `_. 3.0.2 - 2017-06-14 ------------------ * Added ``FMT_VERSION`` macro (`#411 `_). * Used ``FMT_NULL`` instead of literal ``0`` (`#409 `_). Thanks `@alabuzhev (Alex Alabuzhev) `_. * Added extern templates for ``format_float`` (`#413 `_). * Fixed implicit conversion issue (`#507 `_). * Fixed signbit detection (`#423 `_). * Fixed naming collision (`#425 `_). * Fixed missing intrinsic for C++/CLI (`#457 `_). Thanks `@calumr (Calum Robinson) `_ * Fixed Android detection (`#458 `_). Thanks `@Gachapen (Magnus Bjerke Vik) `_. * Use lean ``windows.h`` if not in header-only mode (`#503 `_). Thanks `@Quentin01 (Quentin Buathier) `_. * Fixed issue with CMake exporting C++11 flag (`#445 `_). Thanks `@EricWF (Eric) `_. * Fixed issue with nvcc and MSVC compiler bug and MinGW (`#505 `_). * Fixed DLL issues (`#469 `_ and `#502 `_). Thanks `@richardeakin (Richard Eakin) `_ and `@AndreasSchoenle (Andreas Schönle) `_. * Fixed test compilation under FreeBSD (`#433 `_). * Fixed various warnings (`#403 `_, `#410 `_ and `#510 `_). Thanks `@Lecetem `_, `@chenhayat (Chen Hayat) `_ and `@trozen `_. * Worked around a broken ``__builtin_clz`` in clang with MS codegen (`#519 `_). * Removed redundant include (`#479 `_). * Fixed documentation issues. 3.0.1 - 2016-11-01 ------------------ * Fixed handling of thousands seperator (`#353 `_). * Fixed handling of ``unsigned char`` strings (`#373 `_). * Corrected buffer growth when formatting time (`#367 `_). * Removed warnings under MSVC and clang (`#318 `_, `#250 `_, also merged `#385 `_ and `#361 `_). Thanks `@jcelerier (Jean-Michaël Celerier) `_ and `@nmoehrle (Nils Moehrle) `_. * Fixed compilation issues under Android (`#327 `_, `#345 `_ and `#381 `_), FreeBSD (`#358 `_), Cygwin (`#388 `_), MinGW (`#355 `_) as well as other issues (`#350 `_, `#366 `_, `#348 `_, `#402 `_, `#405 `_). Thanks to `@dpantele (Dmitry) `_, `@hghwng (Hugh Wang) `_, `@arvedarved (Tilman Keskinöz) `_, `@LogicalKnight (Sean) `_ and `@JanHellwig (Jan Hellwig) `_. * Fixed some documentation issues and extended specification (`#320 `_, `#333 `_, `#347 `_, `#362 `_). Thanks to `@smellman (Taro Matsuzawa aka. btm) `_. 3.0.0 - 2016-05-07 ------------------ * The project has been renamed from C++ Format (cppformat) to fmt for consistency with the used namespace and macro prefix (`#307 `_). Library headers are now located in the ``fmt`` directory: .. code:: c++ #include "fmt/format.h" Including ``format.h`` from the ``cppformat`` directory is deprecated but works via a proxy header which will be removed in the next major version. The documentation is now available at http://fmtlib.net. * Added support for `strftime `_-like `date and time formatting `_ (`#283 `_): .. code:: c++ #include "fmt/time.h" std::time_t t = std::time(nullptr); // Prints "The date is 2016-04-29." (with the current date) fmt::print("The date is {:%Y-%m-%d}.", *std::localtime(&t)); * ``std::ostream`` support including formatting of user-defined types that provide overloaded ``operator<<`` has been moved to ``fmt/ostream.h``: .. code:: c++ #include "fmt/ostream.h" class Date { int year_, month_, day_; public: Date(int year, int month, int day) : year_(year), month_(month), day_(day) {} friend std::ostream &operator<<(std::ostream &os, const Date &d) { return os << d.year_ << '-' << d.month_ << '-' << d.day_; } }; std::string s = fmt::format("The date is {}", Date(2012, 12, 9)); // s == "The date is 2012-12-9" * Added support for `custom argument formatters `_ (`#235 `_). * Added support for locale-specific integer formatting with the ``n`` specifier (`#305 `_): .. code:: c++ std::setlocale(LC_ALL, "en_US.utf8"); fmt::print("cppformat: {:n}\n", 1234567); // prints 1,234,567 * Sign is now preserved when formatting an integer with an incorrect ``printf`` format specifier (`#265 `_): .. code:: c++ fmt::printf("%lld", -42); // prints -42 Note that it would be an undefined behavior in ``std::printf``. * Length modifiers such as ``ll`` are now optional in printf formatting functions and the correct type is determined automatically (`#255 `_): .. code:: c++ fmt::printf("%d", std::numeric_limits::max()); Note that it would be an undefined behavior in ``std::printf``. * Added initial support for custom formatters (`#231 `_). * Fixed detection of user-defined literal support on Intel C++ compiler (`#311 `_, `#312 `_). Thanks to `@dean0x7d (Dean Moldovan) `_ and `@speth (Ray Speth) `_. * Reduced compile time (`#243 `_, `#249 `_, `#317 `_): .. image:: https://cloud.githubusercontent.com/assets/4831417/11614060/ b9e826d2-9c36-11e5-8666-d4131bf503ef.png .. image:: https://cloud.githubusercontent.com/assets/4831417/11614080/ 6ac903cc-9c37-11e5-8165-26df6efae364.png Thanks to `@dean0x7d (Dean Moldovan) `_. * Compile test fixes (`#313 `_). Thanks to `@dean0x7d (Dean Moldovan) `_. * Documentation fixes (`#239 `_, `#248 `_, `#252 `_, `#258 `_, `#260 `_, `#301 `_, `#309 `_). Thanks to `@ReadmeCritic `_ `@Gachapen (Magnus Bjerke Vik) `_ and `@jwilk (Jakub Wilk) `_. * Fixed compiler and sanitizer warnings (`#244 `_, `#256 `_, `#259 `_, `#263 `_, `#274 `_, `#277 `_, `#286 `_, `#291 `_, `#296 `_, `#308 `_) Thanks to `@mwinterb `_, `@pweiskircher (Patrik Weiskircher) `_, `@Naios `_. * Improved compatibility with Windows Store apps (`#280 `_, `#285 `_) Thanks to `@mwinterb `_. * Added tests of compatibility with older C++ standards (`#273 `_). Thanks to `@niosHD `_. * Fixed Android build (`#271 `_). Thanks to `@newnon `_. * Changed ``ArgMap`` to be backed by a vector instead of a map. (`#261 `_, `#262 `_). Thanks to `@mwinterb `_. * Added ``fprintf`` overload that writes to a ``std::ostream`` (`#251 `_). Thanks to `nickhutchinson (Nicholas Hutchinson) `_. * Export symbols when building a Windows DLL (`#245 `_). Thanks to `macdems (Maciek Dems) `_. * Fixed compilation on Cygwin (`#304 `_). * Implemented a workaround for a bug in Apple LLVM version 4.2 of clang (`#276 `_). * Implemented a workaround for Google Test bug `#705 `_ on gcc 6 (`#268 `_). Thanks to `octoploid `_. * Removed Biicode support because the latter has been discontinued. 2.1.1 - 2016-04-11 ------------------ * The install location for generated CMake files is now configurable via the ``FMT_CMAKE_DIR`` CMake variable (`#299 `_). Thanks to `@niosHD `_. * Documentation fixes (`#252 `_). 2.1.0 - 2016-03-21 ------------------ * Project layout and build system improvements (`#267 `_): * The code have been moved to the ``cppformat`` directory. Including ``format.h`` from the top-level directory is deprecated but works via a proxy header which will be removed in the next major version. * C++ Format CMake targets now have proper interface definitions. * Installed version of the library now supports the header-only configuration. * Targets ``doc``, ``install``, and ``test`` are now disabled if C++ Format is included as a CMake subproject. They can be enabled by setting ``FMT_DOC``, ``FMT_INSTALL``, and ``FMT_TEST`` in the parent project. Thanks to `@niosHD `_. 2.0.1 - 2016-03-13 ------------------ * Improved CMake find and package support (`#264 `_). Thanks to `@niosHD `_. * Fix compile error with Android NDK and mingw32 (`#241 `_). Thanks to `@Gachapen (Magnus Bjerke Vik) `_. * Documentation fixes (`#248 `_, `#260 `_). 2.0.0 - 2015-12-01 ------------------ General ~~~~~~~ * [Breaking] Named arguments (`#169 `_, `#173 `_, `#174 `_): .. code:: c++ fmt::print("The answer is {answer}.", fmt::arg("answer", 42)); Thanks to `@jamboree `_. * [Experimental] User-defined literals for format and named arguments (`#204 `_, `#206 `_, `#207 `_): .. code:: c++ using namespace fmt::literals; fmt::print("The answer is {answer}.", "answer"_a=42); Thanks to `@dean0x7d (Dean Moldovan) `_. * [Breaking] Formatting of more than 16 arguments is now supported when using variadic templates (`#141 `_). Thanks to `@Shauren `_. * Runtime width specification (`#168 `_): .. code:: c++ fmt::format("{0:{1}}", 42, 5); // gives " 42" Thanks to `@jamboree `_. * [Breaking] Enums are now formatted with an overloaded ``std::ostream`` insertion operator (``operator<<``) if available (`#232 `_). * [Breaking] Changed default ``bool`` format to textual, "true" or "false" (`#170 `_): .. code:: c++ fmt::print("{}", true); // prints "true" To print ``bool`` as a number use numeric format specifier such as ``d``: .. code:: c++ fmt::print("{:d}", true); // prints "1" * ``fmt::printf`` and ``fmt::sprintf`` now support formatting of ``bool`` with the ``%s`` specifier giving textual output, "true" or "false" (`#223 `_): .. code:: c++ fmt::printf("%s", true); // prints "true" Thanks to `@LarsGullik `_. * [Breaking] ``signed char`` and ``unsigned char`` are now formatted as integers by default (`#217 `_). * [Breaking] Pointers to C strings can now be formatted with the ``p`` specifier (`#223 `_): .. code:: c++ fmt::print("{:p}", "test"); // prints pointer value Thanks to `@LarsGullik `_. * [Breaking] ``fmt::printf`` and ``fmt::sprintf`` now print null pointers as ``(nil)`` and null strings as ``(null)`` for consistency with glibc (`#226 `_). Thanks to `@LarsGullik `_. * [Breaking] ``fmt::(s)printf`` now supports formatting of objects of user-defined types that provide an overloaded ``std::ostream`` insertion operator (``operator<<``) (`#201 `_): .. code:: c++ fmt::printf("The date is %s", Date(2012, 12, 9)); * [Breaking] The ``Buffer`` template is now part of the public API and can be used to implement custom memory buffers (`#140 `_). Thanks to `@polyvertex (Jean-Charles Lefebvre) `_. * [Breaking] Improved compatibility between ``BasicStringRef`` and `std::experimental::basic_string_view `_ (`#100 `_, `#159 `_, `#183 `_): - Comparison operators now compare string content, not pointers - ``BasicStringRef::c_str`` replaced by ``BasicStringRef::data`` - ``BasicStringRef`` is no longer assumed to be null-terminated References to null-terminated strings are now represented by a new class, ``BasicCStringRef``. * Dependency on pthreads introduced by Google Test is now optional (`#185 `_). * New CMake options ``FMT_DOC``, ``FMT_INSTALL`` and ``FMT_TEST`` to control generation of ``doc``, ``install`` and ``test`` targets respectively, on by default (`#197 `_, `#198 `_, `#200 `_). Thanks to `@maddinat0r (Alex Martin) `_. * ``noexcept`` is now used when compiling with MSVC2015 (`#215 `_). Thanks to `@dmkrepo (Dmitriy) `_. * Added an option to disable use of ``windows.h`` when ``FMT_USE_WINDOWS_H`` is defined as 0 before including ``format.h`` (`#171 `_). Thanks to `@alfps (Alf P. Steinbach) `_. * [Breaking] ``windows.h`` is now included with ``NOMINMAX`` unless ``FMT_WIN_MINMAX`` is defined. This is done to prevent breaking code using ``std::min`` and ``std::max`` and only affects the header-only configuration (`#152 `_, `#153 `_, `#154 `_). Thanks to `@DevO2012 `_. * Improved support for custom character types (`#171 `_). Thanks to `@alfps (Alf P. Steinbach) `_. * Added an option to disable use of IOStreams when ``FMT_USE_IOSTREAMS`` is defined as 0 before including ``format.h`` (`#205 `_, `#208 `_). Thanks to `@JodiTheTigger `_. * Improved detection of ``isnan``, ``isinf`` and ``signbit``. Optimization ~~~~~~~~~~~~ * Made formatting of user-defined types more efficient with a custom stream buffer (`#92 `_, `#230 `_). Thanks to `@NotImplemented `_. * Further improved performance of ``fmt::Writer`` on integer formatting and fixed a minor regression. Now it is ~7% faster than ``karma::generate`` on Karma's benchmark (`#186