func os/exec.lookExtensions

3 uses

	os/exec (current package)
		exec.go#L460: 		if lp, err := lookExtensions(name, ""); err == nil {
		exec.go#L685: 			lp, err = lookExtensions(c.Path, c.Dir)
		lp_unix.go#L86: func lookExtensions(path, dir string) (string, error) {