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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);