- Update to version 8.1.0
* Optimized chrono formatting.
+ Processing of some specifiers such as %z and %Y is now up
to 10-20 times faster, for example on GCC 11 with
libstdc++.
* Implemented subsecond formatting for chrono durations.
* Fixed handling of precision 0 when formatting chrono
durations.
* Fixed an overflow on invalid inputs in the tm formatter.
* Added fmt::group_digits that formats integers with a
non-localized digit separator (comma) for groups of three
digits.
* Added support for faint, conceal, reverse and blink text
styles.
* Added experimental support for compile-time floating point
formatting.
* Added UDL-based named argument support to compile-time
format string checks.
* Implemented escaping of string range elements.
* Switched to JSON-like representation of maps and sets for
consistency with Python's str.format.
* Extended fmt::join to support C++20-only ranges.
* Optimized handling of non-const-iterable ranges and
implemented initial support for non-const-formattable types.
* Disabled implicit conversions of scoped enums to integers
that was accidentally introduced in earlier versions.
* Deprecated implicit conversion of [const] signed char* and
[const] unsigned char* to C strings.
* Deprecated _format, a legacy UDL-based format API.
* Marked format, formatted_size and to_string as [[nodiscard]].
* Added missing diagnostic when trying to format function and
member pointers as well as objects convertible to pointers
which is explicitly disallowed.
* Optimized writing to a contiguous buffer with format_to_n.
* Optimized writing to non-char buffers.
* Decimal point is now localized when using the L specifier.
* Improved floating point formatter implementation.
* Fixed handling of very large precision in fixed format.
* Made a table of cached powers used in FP formatting static.
* Resolved a lookup ambiguity with C++20 format-related
functions due to ADL.
* Removed unnecessary inline namespace qualification.
* Implemented argument forwarding in format_to_n.
* Fixed handling of implicit conversions in fmt::to_string and
format string compilation.
* Changed the default access mode of files created by
fmt::output_file to -rw-r--r-- for consistency with fopen.
* Make fmt::ostream::flush public.
* Improved C++14/17 attribute detection.
* Improved documentation.
* Improved fuzzers and added a fuzzer for chrono timepoint
formatting.
* Added the FMT_SYSTEM_HEADERS CMake option setting which
marks {fmt}'s headers as system. It can be used to suppress
warnings.
* Added the Bazel build system support.
* Improved build configuration and tests.
* Fixed various warnings and compilation issues.