func regexp/syntax.isalnum

3 uses

	regexp/syntax (current package)
		parse.go#L1261: 		if c != '_' && !isalnum(c) {
		parse.go#L1456: 		if c < utf8.RuneSelf && !isalnum(c) {
		parse.go#L2100: func isalnum(c rune) bool {

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