Merge branch 'sg/completion-remote' into maint

Code simplification.

* sg/completion-remote:
  completion: simplify __git_remotes()
  completion: add a test for __git_remotes() helper function

contrib/completion/git-completion.bash

@@ -411,12 +411,9 @@ __git_refs_remotes ()
 
 __git_remotes ()
 {
-	local i IFS=$'\n' d="$(__gitdir)"
+	local d="$(__gitdir)"
 	test -d "$d/remotes" && ls -1 "$d/remotes"
-	for i in $(git --git-dir="$d" config --get-regexp 'remote\..*\.url' 2>/dev/null); do
-		i="${i#remote.}"
-		echo "${i/.url*/}"
-	done
+	git --git-dir="$d" remote
 }
 
 __git_list_merge_strategies ()