The upload_pack shell variable is initialized to an empty string, so
conditional expansion with ${upload_pack+"$upload_pack"} would not
work very well. You need a colon there.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
}
orig_head=$(git rev-parse -q --verify HEAD)
git fetch $verbosity $progress $dry_run $recurse_submodules $all $append \
-${upload_pack+"$upload_pack"} $force $tags $prune $keep $depth $unshallow $update_shallow \
+${upload_pack:+"$upload_pack"} $force $tags $prune $keep $depth $unshallow $update_shallow \
$refmap --update-head-ok "$@" || exit 1
test -z "$dry_run" || exit 0