func go/printer.commonPrefix

4 uses

	go/printer (current package)
		printer.go#L484: func commonPrefix(a, b string) string {
		printer.go#L538: 				prefix = commonPrefix(prefix, line)
		printer.go#L546: 		prefix = commonPrefix(line, line)
		printer.go#L618: 		prefix = commonPrefix(prefix, last)