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Fix precision with non-ascii characters

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This commit is contained in:
Shawn Zhong 2023-02-07 04:29:55 -06:00
parent 05e3a9233a
commit f5cd979adf
2 changed files with 4 additions and 1 deletions
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3
include/fmt/format.h
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@ -773,7 +773,8 @@ inline auto code_point_index(string_view s, size_t n) -> size_t {
for (size_t i = 0, size = s.size(); i != size; ++i) { for (size_t i = 0, size = s.size(); i != size; ++i) {
if ((data[i] & 0xc0) != 0x80 && ++num_code_points > n) return i; if ((data[i] & 0xc0) != 0x80 && ++num_code_points > n) return i;
} }
return s.size(); size_t size = s.size();
return n < size ? n : size;
} }
inline auto code_point_index(basic_string_view<char8_type> s, size_t n) inline auto code_point_index(basic_string_view<char8_type> s, size_t n)

2
test/xchar-test.cc
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@ -155,6 +155,8 @@ TEST(xchar_test, format_utf8_precision) {
EXPECT_EQ(fmt::detail::compute_width(result), 4); EXPECT_EQ(fmt::detail::compute_width(result), 4);
EXPECT_EQ(result.size(), 5); EXPECT_EQ(result.size(), 5);
EXPECT_EQ(from_u8str(result), from_u8str(str.substr(0, 5))); EXPECT_EQ(from_u8str(result), from_u8str(str.substr(0, 5)));
EXPECT_EQ(fmt::format("{:.0}", "\xad").size(), 0);
} }
TEST(xchar_test, format_to) { TEST(xchar_test, format_to) {