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Fix a bug when copying the fill from basic_specs

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Signed-off-by: Vladislav Shchapov <vladislav@shchapov.ru>
This commit is contained in:
Vladislav Shchapov 2025-01-02 22:54:19 +05:00 committed by Victor Zverovich
parent 880e1494dc
commit dad3237514
4 changed files with 18 additions and 6 deletions
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14
include/fmt/format.h
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@ -3654,6 +3654,17 @@ void vformat_to(buffer<Char>& buf, basic_string_view<Char> fmt,
parse_format_string(
fmt, format_handler<Char>{parse_context<Char>(fmt), {out, args, loc}});
}
template <typename Char>
void basic_specs_copy_fill(basic_specs& dst, const basic_specs& src) {
if (src.fill_size() == 1 && const_check(!std::is_same<Char, char>::value)) {
Char fill = src.fill_unit<Char>();
dst.set_fill(basic_string_view<Char>(&fill, 1));
return;
}
dst.set_fill(basic_string_view<char>(src.fill<char>(), src.fill_size()));
}
} // namespace detail
FMT_BEGIN_EXPORT
@ -3960,8 +3971,7 @@ template <typename T, typename Char = char> struct nested_formatter {
write(basic_appender<Char>(buf));
auto specs = format_specs();
specs.width = width_;
specs.set_fill(
basic_string_view<Char>(specs_.fill<Char>(), specs_.fill_size()));
detail::basic_specs_copy_fill<Char>(specs, specs_);
specs.set_align(specs_.align());
return detail::write<Char>(
ctx.out(), basic_string_view<Char>(buf.data(), buf.size()), specs);

4
include/fmt/std.h
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@ -696,9 +696,7 @@ template <typename T, typename Char> struct formatter<std::complex<T>, Char> {
auto outer_specs = format_specs();
outer_specs.width = specs.width;
auto fill = specs.template fill<Char>();
if (fill)
outer_specs.set_fill(basic_string_view<Char>(fill, specs.fill_size()));
detail::basic_specs_copy_fill<Char>(outer_specs, specs);
outer_specs.set_align(specs.align());
specs.width = 0;

3
test/std-test.cc
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@ -91,6 +91,9 @@ TEST(std_test, complex) {
EXPECT_EQ(fmt::format("{: }", std::complex<double>(1, 2.2)), "( 1+2.2i)");
EXPECT_EQ(fmt::format("{: }", std::complex<double>(1, -2.2)), "( 1-2.2i)");
EXPECT_EQ(fmt::format("{:8}", std::complex<double>(1, 2)), "(1+2i) ");
EXPECT_EQ(fmt::format("{:-<8}", std::complex<double>(1, 2)), "(1+2i)--");
EXPECT_EQ(fmt::format("{:>20.2f}", std::complex<double>(1, 2.2)),
" (1.00+2.20i)");
EXPECT_EQ(fmt::format("{:<20.2f}", std::complex<double>(1, 2.2)),

3
test/xchar-test.cc
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@ -79,7 +79,7 @@ TEST(xchar_test, format) {
EXPECT_THROW(fmt::format(fmt::runtime(L"{:*\x343E}"), 42), fmt::format_error);
EXPECT_EQ(fmt::format(L"{}", true), L"true");
EXPECT_EQ(fmt::format(L"{0}", L'a'), L"a");
EXPECT_EQ(fmt::format(L"Letter {}", L'\x40e'), L"Letter \x40e"); // Ў
EXPECT_EQ(fmt::format(L"Letter {}", L'\x40e'), L"Letter \x40e"); // Ў
if (sizeof(wchar_t) == 4)
EXPECT_EQ(fmt::format(fmt::runtime(L"{:𓀨>3}"), 42), L"𓀨42");
EXPECT_EQ(fmt::format(L"{}c{}", L"ab", 1), L"abc1");
@ -504,6 +504,7 @@ TEST(std_test_xchar, complex) {
EXPECT_EQ(fmt::format(L"{:.2f}", std::complex<double>(1, 2)),
L"(1.00+2.00i)");
EXPECT_EQ(fmt::format(L"{:8}", std::complex<double>(1, 2)), L"(1+2i) ");
EXPECT_EQ(fmt::format(L"{:-<8}", std::complex<double>(1, 2)), L"(1+2i)--");
}
TEST(std_test_xchar, optional) {