hook: add a simple first example

Add a simple example that replaces an outdated example that was removed. This ensures that there's at the least a simple example that illustrates what could be done using the hook just by enabling it. Also, update the documentation. Signed-off-by: Kaartic Sivaraam <kaarticsivaraam91196@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Kaartic Sivaraam committed Jul 11, 2017 at 20:00 UTC 0ef1a4e32a720928a497a13ef08aa8f0a63dc476
2 files changed +9 -3
Documentation/githooks.txt
+3
@@ -121,6 +121,9 @@ it is not suppressed by the `--no-verify` option. A non-zero exit
121 means a failure of the hook and aborts the commit. It should not
122 be used as replacement for pre-commit hook.
123
124 +The sample `prepare-commit-msg` hook that comes with Git removes the
125 +help message found in the commented portion of the commit template.
126 +
127 commit-msg
128 ~~~~~~~~~~
129
templates/hooks--prepare-commit-msg.sample
+6 -3
@@ -9,20 +9,23 @@
9 #
10 # To enable this hook, rename this file to "prepare-commit-msg".
11
12 -# This hook includes two examples.
12 +# This hook includes three examples. The first one removes the
13 +# "# Please enter the commit message..." help message.
14 #
14 -# The first includes the output of "git diff --name-status -r"
15 +# The second includes the output of "git diff --name-status -r"
16 # into the message, just before the "git status" output. It is
17 # commented because it doesn't cope with --amend or with squashed
18 # commits.
19 #
19 -# The second example adds a Signed-off-by line to the message, that can
20 +# The third example adds a Signed-off-by line to the message, that can
21 # still be edited. This is rarely a good idea.
22
23 COMMIT_MSG_FILE=$1
24 COMMIT_SOURCE=$2
25 SHA1=$3
26
27 +@PERL_PATH@ -i.bak -ne 'print unless(m/^. Please enter the commit message/..m/^#$/)' "$COMMIT_MSG_FILE"
28 +
29 # case "$COMMIT_SOURCE,$SHA1" in
30 # ,|template,)
31 # @PERL_PATH@ -i.bak -pe '