diff options
| -rw-r--r-- | library/core/src/unicode/unicode_data.rs | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/library/core/src/unicode/unicode_data.rs b/library/core/src/unicode/unicode_data.rs index 9c92a8ba28a..16803bf2e83 100644 --- a/library/core/src/unicode/unicode_data.rs +++ b/library/core/src/unicode/unicode_data.rs @@ -549,16 +549,24 @@ pub mod white_space { #[rustfmt::skip] pub mod conversions { pub fn to_lower(c: char) -> [char; 3] { - match bsearch_case_table(c, LOWERCASE_TABLE) { - None => [c, '\0', '\0'], - Some(index) => LOWERCASE_TABLE[index].1, + if c.is_ascii() { + [(c as u8).to_ascii_lowercase() as char, '\0', '\0'] + } else { + match bsearch_case_table(c, LOWERCASE_TABLE) { + None => [c, '\0', '\0'], + Some(index) => LOWERCASE_TABLE[index].1, + } } } pub fn to_upper(c: char) -> [char; 3] { - match bsearch_case_table(c, UPPERCASE_TABLE) { - None => [c, '\0', '\0'], - Some(index) => UPPERCASE_TABLE[index].1, + if c.is_ascii() { + [(c as u8).to_ascii_uppercase() as char, '\0', '\0'] + } else { + match bsearch_case_table(c, UPPERCASE_TABLE) { + None => [c, '\0', '\0'], + Some(index) => UPPERCASE_TABLE[index].1, + } } } |