Merge branch 'maint'

* maint:
  git-remote: exit with non-zero status after detecting errors.
  rebase -i: squash should retain the authorship of the _first_ commit
  git-add--interactive: Improve behavior on bogus input
  git-add--interactive: Allow Ctrl-D to exit

git-rebase--interactive.sh

@@ -276,9 +276,9 @@ do_next () {
 		esac
 
 		failed=f
+		author_script=$(get_author_ident_from_commit HEAD)
 		output git reset --soft HEAD^
 		pick_one -n $sha1 || failed=t
-		author_script=$(get_author_ident_from_commit $sha1)
 		echo "$author_script" > "$DOTEST"/author-script
 		case $failed in
 		f)