Re: [PATCH v3 1/2] run-command: add new check_command helper

Felipe Contreras [off-list ref] writes:

-	while ((waiting = waitpid(pid, &status, 0)) < 0 && errno == EINTR)
-		;	/* nothing */
+	/* First try the last status from check_command() */
+	if (cmd && cmd->last_status.valid) {
+		status = cmd->last_status.status;
+		waiting = pid;
+	} else {
+		while ((waiting = waitpid(pid, status, 0)) < 0 && errno == EINTR)
+			;	/* nothing */

waitpid(pid, &status, 0), I presume.