Sign-off added should be that of the "committer" not that of the "commit's author". Use the correct logical variable that identifies the committer. Signed-off-by: Kaartic Sivaraam <kaarticsivaraam91196@xxxxxxxxx> --- This fixes a small issue when trying to do the following with the script enabled, $ git commit --amend -s If the commit being amended was signed off by the commit's author then the above command would *append* the sign-off of the committer followed by that of the commit's author. That' because the script is invoked only after the sign-off is added by the '-s' option AND the default of 'trailer.ifexists' for interpret-trailers currently defaults to the 'addIfDifferentNeighbor' thus interpret-trailer fails to identify the existing sign-off of the commit's author and adds it. Anyways, it doesn't make sense for a script to add the sign-off of the commit's author. So, fixing it seemed correct to me. templates/hooks--prepare-commit-msg.sample | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/templates/hooks--prepare-commit-msg.sample b/templates/hooks--prepare-commit-msg.sample index a84c3e5a8..12dd8fd88 100755 --- a/templates/hooks--prepare-commit-msg.sample +++ b/templates/hooks--prepare-commit-msg.sample @@ -34,7 +34,7 @@ SHA1=$3 # *) ;; # esac -# SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p') +# SOB=$(git var GIT_COMMITTER_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p') # git interpret-trailers --in-place --trailer "$SOB" "$COMMIT_MSG_FILE" # if test -z "$COMMIT_SOURCE" # then -- 2.14.1.534.g641031ecb