regexp/syntax: fix handling of \Q...\E
It's not a group: must handle the inside as a sequence of literal chars,
not a single literal string.
That is, \Qab\E+ is the same as ab+, not (ab)+.
Fixes #11187.
Change-Id: I5406d05ccf7efff3a7f15395bdb0cfb2bd23a8ed
Reviewed-on: https://go-review.googlesource.com/17233
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
diff --git a/src/regexp/syntax/parse_test.go b/src/regexp/syntax/parse_test.go
index c4a1117..626ceea 100644
--- a/src/regexp/syntax/parse_test.go
+++ b/src/regexp/syntax/parse_test.go
@@ -144,6 +144,7 @@
// Test Perl quoted literals
{`\Q+|*?{[\E`, `str{+|*?{[}`},
{`\Q+\E+`, `plus{lit{+}}`},
+ {`\Qab\E+`, `cat{lit{a}plus{lit{b}}}`},
{`\Q\\E`, `lit{\}`},
{`\Q\\\E`, `str{\\}`},
@@ -479,6 +480,7 @@
`a{100000}`,
`a{100000,}`,
"((((((((((x{2}){2}){2}){2}){2}){2}){2}){2}){2}){2})",
+ `\Q\E*`,
}
var onlyPerl = []string{
