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Make FP formatting compatible with exotic chars

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This commit is contained in:
Victor Zverovich
2025-08-24 08:49:54 -07:00
parent b7b261977e
commit e7e71009c7
2 changed files with 8 additions and 2 deletions
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9
include/fmt/format.h
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@@ -3522,8 +3522,13 @@ FMT_CONSTEXPR20 auto write(OutputIt out, T value) -> OutputIt {
} else {
*ptr++ = static_cast<Char>('0' + significand);
}
memcpy(ptr, prefix, 2);
ptr += 2;
if (std::is_same<Char, char>::value) {
memcpy(ptr, prefix, 2);
ptr += 2;
} else {
*ptr++ = prefix[0];
*ptr++ = prefix[1];
}
if (abs_exponent >= 100) {
*ptr++ = static_cast<Char>('0' + abs_exponent / 100);
abs_exponent %= 100;

1
test/xchar-test.cc
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@@ -74,6 +74,7 @@ TEST(xchar_test, format_explicitly_convertible_to_wstring_view) {
TEST(xchar_test, format) {
EXPECT_EQ(fmt::format(L"{}", 42), L"42");
EXPECT_EQ(fmt::format(L"{}", 4.2), L"4.2");
EXPECT_EQ(fmt::format(L"{}", 1e100), L"1e+100");
EXPECT_EQ(fmt::format(L"{}", L"abc"), L"abc");
EXPECT_EQ(fmt::format(L"{}", L'z'), L"z");
EXPECT_THROW(fmt::format(fmt::runtime(L"{:*\x343E}"), 42), fmt::format_error);