From 28c485ecfc669eab8a6b4c38e11a60c95d76f0ec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C4=90o=C3=A0n=20Tr=E1=BA=A7n=20C=C3=B4ng=20Danh?=
 <congdanhqx@gmail.com>
Date: Fri, 16 Sep 2022 09:18:27 +0700
Subject: [PATCH] changed_templates: explain what has been done

---
 common/travis/changed_templates.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/common/travis/changed_templates.sh b/common/travis/changed_templates.sh
index 3c8acf78763..534cd97a12b 100755
--- a/common/travis/changed_templates.sh
+++ b/common/travis/changed_templates.sh
@@ -6,7 +6,9 @@ PATH="/usr/libexec/chroot-git:$PATH"
 
 tip="$(git rev-list -1 --parents HEAD)"
 case "$tip" in
+	# This is a merge commit, pick last parent
 	*" "*" "*) tip="${tip##* }" ;;
+	# This is a non-merge commit, pick itself
 	*)         tip="${tip%% *}" ;;
 esac