From 6ef360e388da319909c3c6d7a3e4c18a54f80abd Mon Sep 17 00:00:00 2001
From: Stefan Kanev <stefan.kanev@gmail.com>
Date: Tue, 26 Jan 2021 22:39:17 +0200
Subject: [PATCH] git-hooks; don't touch commit --amend message

---
 git-hooks/prepare-commit-msg | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/git-hooks/prepare-commit-msg b/git-hooks/prepare-commit-msg
index 4802a3be..fde92ae3 100755
--- a/git-hooks/prepare-commit-msg
+++ b/git-hooks/prepare-commit-msg
@@ -2,6 +2,8 @@
 
 message = File.read(ARGV[0])
 
+exit 0 unless message.start_with? "\n"
+
 prefixes = [
   [%r{^other/clrs/(\d+)/(\d+)/(\d+)\.},    -> { "clrs; exercise #{$1.to_i}.#{$2.to_i}.#{$3.to_i} – " }],
   [%r{^other/clrs/(\d+)/problems/(\d+)\.}, -> {