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feat(regexlexer): compile in RE2 compatibility mode

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To better match vanilla Go regexps and support some additional
constructs that might be present in Pygments rules.

https://github.com/dlclark/regexp2#re2-compatibility-mode
This commit is contained in:
Ville Skyttä 2021-05-16 22:21:14 +03:00 committed by Alec Thomas
parent 4d45300557
commit b5d03c0079
1 changed files with 1 additions and 1 deletions
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2
regexp.go
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@ -404,7 +404,7 @@ func (r *RegexLexer) maybeCompile() (err error) {
pattern = "(?" + rule.flags + ")" + pattern
}
pattern = `\G` + pattern
rule.Regexp, err = regexp2.Compile(pattern, 0)
rule.Regexp, err = regexp2.Compile(pattern, regexp2.RE2)
if err != nil {
return fmt.Errorf("failed to compile rule %s.%d: %s", state, i, err)
}