From e3797076d92ab2476d2d5d094ff2435775b5b96d Mon Sep 17 00:00:00 2001
From: Michael Vetter <jubalh@iodoru.org>
Date: Wed, 15 Jul 2020 11:36:39 +0200
Subject: [PATCH] Add filetype check to pre hook example

We have `Language: Cpp` in .clang-format but recently it tried to format
my makefile anyways.
Let's add this to be sure.
---
 CONTRIBUTING.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 52c65035..6f9cc3a5 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -15,7 +15,9 @@ You can add the following snippet to `.git/hooks/pre-commit`:
 ```shell
 for f in $(git diff --cached --name-only)
 do
-    clang-format -i $f
+    if [[ "$f" =~ \.(c|h)$ ]]; then
+        clang-format -i $f
+    fi
 done
 ```