From b05442905758e58ea7d99cd8b673e315c0549c88 Mon Sep 17 00:00:00 2001
From: Yoann La Cancellera <lacancellera.yoann@gmail.com>
Date: Fri, 1 Sep 2023 16:56:29 +0200
Subject: [PATCH] Improve: "not found" error handling

---
 src/go/pt-galera-log-explainer/main.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/go/pt-galera-log-explainer/main.go b/src/go/pt-galera-log-explainer/main.go
index de5834c0..f5063928 100644
--- a/src/go/pt-galera-log-explainer/main.go
+++ b/src/go/pt-galera-log-explainer/main.go
@@ -212,6 +212,9 @@ func (e *extractor) search() (types.LocalTimeline, error) {
 
 	// double-check it stopped correctly
 	if err = cmd.Wait(); err != nil {
+		if exiterr, ok := err.(*exec.ExitError); ok && exiterr.ExitCode() == 1 {
+			return nil, errors.New("Found nothing")
+		}
 		return nil, errors.Wrap(err, "grep subprocess error")
 	}