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strings: document that order of pairs matters in NewReplacer

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Update NewReplacer documentation to specify that in the case of
multiple matches at the same position, the matching old/new
pair that appears first in NewReplacer arguments takes precedence.

Fixes #32699

Change-Id: I9d0616d28e5cd8c9bfa301be201f2b0ebf361dff
Reviewed-on: https://go-review.googlesource.com/c/go/+/185099
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
This commit is contained in:
Francesco Renzi 2019-07-09 14:43:10 +01:00 committed by Rob Pike
parent 9d56dd8ea3
commit 80cca23b59
1 changed files with 2 additions and 1 deletions
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src/strings/replace.go
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@ -25,7 +25,8 @@ type replacer interface {
// NewReplacer returns a new Replacer from a list of old, new string // NewReplacer returns a new Replacer from a list of old, new string
// pairs. Replacements are performed in the order they appear in the // pairs. Replacements are performed in the order they appear in the
// target string, without overlapping matches. // target string, without overlapping matches. The old string
// comparisons are done in argument order.
// //
// NewReplacer panics if given an odd number of arguments. // NewReplacer panics if given an odd number of arguments.
func NewReplacer(oldnew ...string) *Replacer { func NewReplacer(oldnew ...string) *Replacer {