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regexp/syntax: [\s\S] -> string is unparsable #31807
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this is causing google/zoekt#82 |
Slightly simpler reproducer: https://play.golang.org/p/6prqe3xt2lT |
This was referenced May 3, 2019
/cc @rsc |
go/src/regexp/syntax/regexp.go Lines 142 to 154 in 3813edf
RE2 had a similar problem, but I fixed it just now in google/re2@cd23be7. ;) |
Change https://golang.org/cl/175679 mentions this issue: |
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Labels
FrozenDueToAge
NeedsInvestigation
Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
What version of Go are you using (
go version
)?go 1.12
Does this issue reproduce with the latest release?
yes.
What operating system and processor architecture are you using (
go env
)?playground
What did you do?
See https://play.golang.org/p/ss5UUhg98GU
What did you expect to see?
I expect regexp to be able to parse back what syntax.Regexp.String() output.
What did you see instead?
"[^]a": error parsing regexp: missing closing ]:
[^]a
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