func go/printer.commonPrefix

4 uses

	go/printer (current package)
		printer.go#L492: func commonPrefix(a, b string) string {
		printer.go#L547: 				prefix = commonPrefix(prefix, line)
		printer.go#L555: 		prefix = commonPrefix(line, line)
		printer.go#L627: 		prefix = commonPrefix(prefix, last)