[PATCH] hooks: add signature to the top of the commit message

[Kaartic Sivaraam <kaarticsivaraam91196@gmail.com>]

The sample hook to prepare the commit message before
a commit allows users to opt-in to add the signature
to the commit message. The signature is added at a place
that isn't consistent with the "-s" option of "git commit".
Further, it could go out of view in certain cases.

Add the signature to the top of the commit message as it's
more appropriate and consistent with the "-s" option of git
commit.

Signed-off-by: Kaartic Sivaraam <kaarticsivaraam91196@gmail.com>
---
 The change might seem to be bit of an hack, but it seems
 worth it (at least to me). I hope I haven't used any
 commands that aren't portable.

 templates/hooks--prepare-commit-msg.sample | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/templates/hooks--prepare-commit-msg.sample b/templates/hooks--prepare-commit-msg.sample
index 86b8f227e..3c8f5a53d 100755
--- a/templates/hooks--prepare-commit-msg.sample
+++ b/templates/hooks--prepare-commit-msg.sample
@@ -33,4 +33,7 @@ case "$2,$3" in
 esac
 
 # SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
-# grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"
+# SOB_TO_ADD='
+#
+# '$SOB
+# grep -qs "^$SOB" "$1" || (echo "$SOB_TO_ADD" | cat - "$1" >temp-template && mv temp-template "$1")
-- 
2.11.0