completion: teach remote subcommands to complete options

Git-remote needs to complete remote names, its subcommands, and options
thereof. In addition to the existing subcommand and remote name
completion, do also complete the options

 - add: --track --master --fetch --tags --no-tags --mirror=
 - set-url: --push --add --delete
 - get-url: --push --all
 - prune: --dry-run

Signed-off-by: Cornelius Weig <cornelius.weig@tngtech.com>
Reviewed-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/completion/git-completion.bash

@@ -2384,24 +2384,55 @@ _git_config ()
 
 _git_remote ()
 {
-	local subcommands="add rename remove set-head set-branches set-url show prune update"
+	local subcommands="
+		add rename remove set-head set-branches
+		get-url set-url show prune update
+		"
 	local subcommand="$(__git_find_on_cmdline "$subcommands")"
 	if [ -z "$subcommand" ]; then
+		case "$cur" in
+		--*)
+			__gitcomp "--verbose"
+			;;
+		*)
 			__gitcomp "$subcommands"
+			;;
+		esac
 		return
 	fi
 
-	case "$subcommand" in
+	case "$subcommand,$cur" in
-	rename|remove|set-url|show|prune)
+	add,--*)
-		__gitcomp_nl "$(__git_remotes)"
+		__gitcomp "--track --master --fetch --tags --no-tags --mirror="
 		;;
-	set-head|set-branches)
+	add,*)
+		;;
+	set-head,--*)
+		__gitcomp "--auto --delete"
+		;;
+	set-branches,--*)
+		__gitcomp "--add"
+		;;
+	set-head,*|set-branches,*)
 		__git_complete_remote_or_refspec
 		;;
-	update)
+	update,--*)
+		__gitcomp "--prune"
+		;;
+	update,*)
 		__gitcomp "$(__git_get_config_variables "remotes")"
 		;;
+	set-url,--*)
+		__gitcomp "--push --add --delete"
+		;;
+	get-url,--*)
+		__gitcomp "--push --all"
+		;;
+	prune,--*)
+		__gitcomp "--dry-run"
+		;;
 	*)
+		__gitcomp_nl "$(__git_remotes)"
 		;;
 	esac
 }