const regexp/syntax.ClassNL

4 uses

	regexp/syntax (current package)
		parse.go#L60: 	ClassNL                         // allow character classes like [^a-z] and [[:space:]] to match newline
		parse.go#L69: 	MatchNL = ClassNL | DotNL
		parse.go#L71: 	Perl        = ClassNL | OneLine | PerlX | UnicodeGroups // as close to Perl as possible
		parse.go#L1744: 		if p.flags&ClassNL == 0 {

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