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Improve utf-8 detection

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This commit is contained in:
Victor Zverovich
2024-05-11 18:58:40 -07:00
parent b7809f91e2
commit 3460b30fd5
2 changed files with 11 additions and 9 deletions
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include/fmt/base.h
+6 -2
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@@ -420,7 +420,7 @@ struct is_std_string_like<T, void_t<decltype(std::declval<T>().find_first_of(
typename T::value_type(), 0))>>
: std::true_type {};
FMT_CONSTEXPR inline auto is_utf8() -> bool {
FMT_CONSTEXPR inline auto is_utf8_enabled() -> bool {
FMT_MSC_WARNING(suppress : 4566) constexpr unsigned char section[] = "\u00A7";
// Avoid an MSVC sign extension bug: https://github.com/fmtlib/fmt/pull/2297.
using uchar = unsigned char;
@@ -428,7 +428,11 @@ FMT_CONSTEXPR inline auto is_utf8() -> bool {
uchar(section[1]) == 0xA7;
static_assert(utf8 || !FMT_MSC_VERSION,
"Unicode support requires compiling with /utf-8");
return FMT_UNICODE || utf8;
return utf8;
}
FMT_CONSTEXPR inline auto is_utf8() -> bool {
return FMT_UNICODE || is_utf8_enabled();
}
template <typename Char> FMT_CONSTEXPR auto length(const Char* s) -> size_t {