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unicode/utf8: update doc for RuneLen

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As CL 569755 did, for consistency, this CL slightly improves
the documentation for RuneLen.

Change-Id: Ic9776648baf2809af36cd16a94d1313938bb0e52
Reviewed-on: https://go-review.googlesource.com/c/go/+/569816
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
This commit is contained in:
Jes Cok 2024-03-08 07:34:10 +08:00 committed by Gopher Robot
parent 5a329c3bfb
commit 69583738eb
1 changed files with 1 additions and 1 deletions
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2
src/unicode/utf8/utf8.go
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@ -316,7 +316,7 @@ func DecodeLastRuneInString(s string) (r rune, size int) {
return r, size return r, size
} }
// RuneLen returns the number of bytes required to encode the rune. // RuneLen returns the number of bytes in the UTF-8 encoding of the rune.
// It returns -1 if the rune is not a valid value to encode in UTF-8. // It returns -1 if the rune is not a valid value to encode in UTF-8.
func RuneLen(r rune) int { func RuneLen(r rune) int {
switch { switch {