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* regexp/syntax: fix factoring of common prefixes in alternationsPaul Wankadia2016-01-082-7/+15
| | | | | | | | | | | | | In the past, `a.*?c|a.*?b` was factored to `a.*?[bc]`. Thus, given "abc" as its input string, the automaton would consume "ab" and then stop (when unanchored) whereas it should consume all of "abc" as per leftmost semantics. Fixes #13812. Change-Id: I67ac0a353d7793b3d0c9c4aaf22d157621dfe784 Reviewed-on: https://go-review.googlesource.com/18357 Reviewed-by: Russ Cox <rsc@golang.org>
* regexp/syntax: fix handling of \Q...\ERuss Cox2015-12-012-1/+10
| | | | | | | | | | | | | | | 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>
* regexp/syntax: correctly print `^` BOL and `$` EOLTamir Duberstein2015-11-252-4/+4
| | | | | | | | Fixes #12980. Change-Id: I936db2f57f7c4dc80bb8ec32715c4c6b7bf0d708 Reviewed-on: https://go-review.googlesource.com/16112 Reviewed-by: Russ Cox <rsc@golang.org>
* all: use "reports whether" in place of "returns true if(f)"Josh Bleecher Snyder2015-03-181-2/+2
| | | | | | | | Comment changes only. Change-Id: I56848814564c4aa0988b451df18bebdfc88d6d94 Reviewed-on: https://go-review.googlesource.com/7721 Reviewed-by: Rob Pike <r@golang.org>
* regexp/syntax: Clarify comment of OpAnyCharNotNL.Robin Eklind2014-11-111-1/+1
| | | | | | | LGTM=iant R=golang-codereviews, iant CC=golang-codereviews https://golang.org/cl/171560043
* regexp/syntax: fix validity testing of zero repeatsIan Lance Taylor2014-10-201-1/+6
| | | | | | | | | | This is already tested by TestRE2Exhaustive, but the build has not broken because that test is not run when using -test.short. LGTM=rsc R=rsc CC=golang-codereviews https://golang.org/cl/155580043
* regexp/syntax: regenerate doc.go from re2 syntaxRuss Cox2014-10-061-24/+24
| | | | | | | | | | | Generated using re2/doc/mksyntaxgo. Fixes #8505. LGTM=iant R=r, iant CC=golang-codereviews https://golang.org/cl/155890043
* regexp/syntax: reject large repetitions created by nesting small onesRuss Cox2014-09-302-0/+47
| | | | | | | | | Fixes #7609. LGTM=r R=r CC=golang-codereviews https://golang.org/cl/150270043
* build: move package sources from src/pkg to srcRuss Cox2014-09-0811-0/+4163
Preparation was in CL 134570043. This CL contains only the effect of 'hg mv src/pkg/* src'. For more about the move, see golang.org/s/go14nopkg.
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