strconv: document that Unquote("''") returns an empty string

Fixes #64280

Change-Id: I1ad84d85b666a2ef52dc6ecdecd508b4e7fe24a6
GitHub-Last-Rev: 6242027261f02c578a09f70fcb39a8cac259855c
GitHub-Pull-Request: golang/go#68524
Reviewed-on: https://go-review.googlesource.com/c/go/+/599575
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Griesemer <gri@google.com>

diff --git a/src/strconv/quote.go b/src/strconv/quote.go
index d626cd0837aaddd26b7eaace63ab1eee3fd08647..1f4929a952c6bf786eb551ef729f4011817f1848 100644 (file)
--- a/src/strconv/quote.go
+++ b/src/strconv/quote.go
@@ -378,7 +378,7 @@ func QuotedPrefix(s string) (string, error) {
 // or backquoted Go string literal, returning the string value
 // that s quotes.  (If s is single-quoted, it would be a Go
 // character literal; Unquote returns the corresponding
-// one-character string.)
+// one-character string. For '' Unquote returns the empty string.)
 func Unquote(s string) (string, error) {
        out, rem, err := unquote(s, true)
        if len(rem) > 0 {