Merge pull request #2120 from davidkna/norm-fast-path

perf(gix-utils): add normalization fast path

Author: Byron

gix-utils/src/str.rs

@@ -4,8 +4,8 @@ use std::{borrow::Cow, ffi::OsStr, path::Path};
 ///
 /// At the expense of extra-compute, it does nothing if there is no work to be done, returning the original input without allocating.
 pub fn precompose(s: Cow<'_, str>) -> Cow<'_, str> {
-    use unicode_normalization::UnicodeNormalization;
-    if s.as_ref().nfc().cmp(s.as_ref().chars()).is_eq() {
+    use unicode_normalization::{is_nfc, UnicodeNormalization};
+    if is_nfc(s.as_ref()) {
         s
     } else {
         Cow::Owned(s.as_ref().nfc().collect())
@@ -16,8 +16,8 @@ pub fn precompose(s: Cow<'_, str>) -> Cow<'_, str> {
 ///
 /// At the expense of extra-compute, it does nothing if there is no work to be done, returning the original input without allocating.
 pub fn decompose(s: Cow<'_, str>) -> Cow<'_, str> {
-    use unicode_normalization::UnicodeNormalization;
-    if s.as_ref().nfd().cmp(s.as_ref().chars()).is_eq() {
+    use unicode_normalization::{is_nfd, UnicodeNormalization};
+    if is_nfd(s.as_ref()) {
         s
     } else {
         Cow::Owned(s.as_ref().nfd().collect())