From 7c6af7b65f5e1abb41d9be2dc8a3f0d1471f32f3 Mon Sep 17 00:00:00 2001
From: Aleksandr Nogikh <nogikh@google.com>
Date: Thu, 6 Apr 2023 19:12:42 +0200
Subject: pkg/email: handle bufio.ErrTooLong

bufio.Scanner has a limit on the maximum line size. Don't panic in this
case.
---
 pkg/email/patch.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/pkg/email/patch.go b/pkg/email/patch.go
index 67ea9005a..8af5e1b79 100644
--- a/pkg/email/patch.go
+++ b/pkg/email/patch.go
@@ -33,7 +33,14 @@ func ParsePatch(message []byte) (diff string) {
 			}
 		}
 	}
-	if err := s.Err(); err != nil {
+	err := s.Err()
+	if err == bufio.ErrTooLong {
+		// It's a problem of the incoming patch, rather than anything else.
+		// Anyway, if a patch contains too long lines, we're probably not
+		// interested in it, so let's pretent we didn't see it.
+		diff = ""
+		return
+	} else if err != nil {
 		panic("error while scanning from memory: " + err.Error())
 	}
 	return
-- 
cgit mrf-deployment