From: Andrew Medvedev <andrew.y.medvedev@gmail.com>
Date: Sat, 21 Sep 2019 12:47:34 +0000 (+0000)
Subject: strings, bytes: clarify usage of EqualFolds
X-Git-Tag: go1.14beta1~1021
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=78e5288b5c720d996ea5132f1fa0348968ff0513;p=gostls13.git

strings, bytes: clarify usage of EqualFolds

This clarifies meaning of "case folding" Unicode equality with more familiar "case insensitive" wording.
For case folding properties see ftp://ftp.unicode.org/Public/UNIDATA/CaseFolding.txt.

Fixes #33447

Change-Id: I6ee85ab398679bf2a0b7d18693985ff0979d6c5a
GitHub-Last-Rev: accc9159330c61e046d77f77beac62b38bf72c19
GitHub-Pull-Request: golang/go#34434
Reviewed-on: https://go-review.googlesource.com/c/go/+/196717
Reviewed-by: Rob Pike <r@golang.org>
---

diff --git a/src/bytes/bytes.go b/src/bytes/bytes.go
index eb13212384..e872cc2050 100644
--- a/src/bytes/bytes.go
+++ b/src/bytes/bytes.go
@@ -935,7 +935,8 @@ func ReplaceAll(s, old, new []byte) []byte {
 }
 
 // EqualFold reports whether s and t, interpreted as UTF-8 strings,
-// are equal under Unicode case-folding.
+// are equal under Unicode case-folding, which is a more general
+// form of case-insensitivity.
 func EqualFold(s, t []byte) bool {
 	for len(s) != 0 && len(t) != 0 {
 		// Extract first rune from each.
diff --git a/src/strings/strings.go b/src/strings/strings.go
index cee315ce9e..869cdcdcef 100644
--- a/src/strings/strings.go
+++ b/src/strings/strings.go
@@ -969,7 +969,8 @@ func ReplaceAll(s, old, new string) string {
 }
 
 // EqualFold reports whether s and t, interpreted as UTF-8 strings,
-// are equal under Unicode case-folding.
+// are equal under Unicode case-folding, which is a more general
+// form of case-insensitivity.
 func EqualFold(s, t string) bool {
 	for s != "" && t != "" {
 		// Extract first rune from each string.