Resync bash completion to include all flags defined in the code, and to autocomplete properly on all parameters that are reasonably possible to do so on today

This also includes several new minor features that are interesting, so do explore a little. :)

Finally, this also fixes a few bugs where commands would complete parameters that they won't necessarily accept.  We still have a few of these cases, but they're reduced to a minimum now.

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)

contrib/completion/bash/docker

@@ -23,62 +23,82 @@
 
 __docker_containers_all()
 {
-	local containers
-	containers="$( docker ps -a -q )"
-	names="$( docker inspect --format '{{.Name}}' $containers | sed 's,^/,,' )"
+	local containers="$( docker ps -a -q )"
+	local names="$( docker inspect --format '{{.Name}}' $containers | sed 's,^/,,' )"
 	COMPREPLY=( $( compgen -W "$names $containers" -- "$cur" ) )
 }
 
 __docker_containers_running()
 {
-	local containers
-	containers="$( docker ps -q )"
-	names="$( docker inspect --format '{{.Name}}' $containers | sed 's,^/,,' )"
+	local containers="$( docker ps -q )"
+	local names="$( docker inspect --format '{{.Name}}' $containers | sed 's,^/,,' )"
 	COMPREPLY=( $( compgen -W "$names $containers" -- "$cur" ) )
 }
 
 __docker_containers_stopped()
 {
-	local containers
-	containers="$( comm -13 <(docker ps -q | sort -u) <(docker ps -a -q | sort -u) )"
-	names="$( docker inspect --format '{{.Name}}' $containers | sed 's,^/,,' )"
+	local containers="$( { docker ps -a -q; docker ps -q; } | sort | uniq -u )"
+	local names="$( docker inspect --format '{{.Name}}' $containers | sed 's,^/,,' )"
 	COMPREPLY=( $( compgen -W "$names $containers" -- "$cur" ) )
 }
 
 __docker_image_repos()
 {
-	local repos
-	repos="$( docker images | awk 'NR>1{print $1}' )"
+	local repos="$( docker images | awk 'NR>1{print $1}' | grep -v '^<none>$' )"
 	COMPREPLY=( $( compgen -W "$repos" -- "$cur" ) )
 }
 
-__docker_images()
+__docker_image_repos_and_tags()
 {
-	local images
-	images="$( docker images | awk 'NR>1{print $1":"$2}' )"
-	COMPREPLY=( $( compgen -W "$images" -- "$cur" ) )
+	local repos="$( docker images | awk 'NR>1{print $1}' | grep -v '^<none>$' )"
+	local images="$( docker images | awk 'NR>1{print $1":"$2}' | grep -v '^<none>:' )"
+	COMPREPLY=( $( compgen -W "$repos $images" -- "$cur" ) )
 	__ltrim_colon_completions "$cur"
 }
 
-__docker_image_repos_and_tags()
+__docker_image_repos_and_tags_and_ids()
 {
-	local repos images
-	repos="$( docker images | awk 'NR>1{print $1}' )"
-	images="$( docker images | awk 'NR>1{print $1":"$2}' )"
-	COMPREPLY=( $( compgen -W "$repos $images" -- "$cur" ) )
+	local repos="$( docker images | awk 'NR>1{print $1}' | grep -v '^<none>$' )"
+	local images="$( docker images | awk 'NR>1{print $1":"$2}' | grep -v '^<none>:' )"
+	local ids="$( docker images -a -q )"
+	COMPREPLY=( $( compgen -W "$repos $images $ids" -- "$cur" ) )
 	__ltrim_colon_completions "$cur"
 }
 
 __docker_containers_and_images()
 {
-	local containers images
-	containers="$( docker ps -a -q )"
-	names="$( docker inspect --format '{{.Name}}' $containers | sed 's,^/,,' )"
-	images="$( docker images | awk 'NR>1{print $1":"$2}' )"
-	COMPREPLY=( $( compgen -W "$images $names $containers" -- "$cur" ) )
+	local containers="$( docker ps -a -q )"
+	local names="$( docker inspect --format '{{.Name}}' $containers | sed 's,^/,,' )"
+	local repos="$( docker images | awk 'NR>1{print $1}' | grep -v '^<none>$' )"
+	local images="$( docker images | awk 'NR>1{print $1":"$2}' | grep -v '^<none>:' )"
+	local ids="$( docker images -a -q )"
+	COMPREPLY=( $( compgen -W "$containers $names $repos $images $ids" -- "$cur" ) )
 	__ltrim_colon_completions "$cur"
 }
 
+__docker_pos_first_nonflag()
+{
+	local argument_flags=$1
+
+	local counter=$cpos
+	while [ $counter -le $cword ]; do
+		if [ -n "$argument_flags" ] && eval "case '${words[$counter]}' in $argument_flags) true ;; *) false ;; esac"; then
+			(( counter++ ))
+		else
+			case "${words[$counter]}" in
+				-*)
+					;;
+				*)
+					break
+					;;
+			esac
+		fi
+		(( counter++ ))
+	done
+
+	echo $counter
+}
+
 _docker_docker()
 {
 	case "$prev" in
@@ -101,15 +121,24 @@ _docker_docker()
 
 _docker_attach()
 {
-	if [ $cpos -eq $cword ]; then
-		__docker_containers_running
-	fi
+	case "$cur" in
+		-*)
+			COMPREPLY=( $( compgen -W "--no-stdin --sig-proxy" -- "$cur" ) )
+			;;
+		*)
+			local counter="$(__docker_pos_first_nonflag)"
+			if [ $cword -eq $counter ]; then
+				__docker_containers_running
+			fi
+			;;
+	esac
 }
 
 _docker_build()
 {
 	case "$prev" in
-		-t)
+		-t|--tag)
+			__docker_image_repos_and_tags
 			return
 			;;
 		*)
@@ -118,10 +147,13 @@ _docker_build()
 
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "--no-cache -t -q --rm" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "-t --tag -q --quiet --no-cache --rm" -- "$cur" ) )
 			;;
 		*)
-			_filedir
+			local counter="$(__docker_pos_first_nonflag '-t|--tag')"
+			if [ $cword -eq $counter ]; then
+				_filedir
+			fi
 			;;
 	esac
 }
@@ -129,7 +161,7 @@ _docker_build()
 _docker_commit()
 {
 	case "$prev" in
-		-author|-m|-run)
+		-m|--message|-a|--author|--run)
 			return
 			;;
 		*)
@@ -138,26 +170,20 @@ _docker_commit()
 
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "--author -m --run" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "-m --message -a --author --run" -- "$cur" ) )
 			;;
 		*)
-			local counter=$cpos
-			while [ $counter -le $cword ]; do
-				case "${words[$counter]}" in
-					-author|-m|-run)
-						(( counter++ ))
-						;;
-					-*)
-						;;
-					*)
-						break
-						;;
-				esac
-				(( counter++ ))
-			done
+			local counter=$(__docker_pos_first_nonflag '-m|--message|-a|--author|--run')
 
-			if [ $counter -eq $cword ]; then
+			if [ $cword -eq $counter ]; then
 				__docker_containers_all
+				return
+			fi
+			(( counter++ ))
+
+			if [ $cword -eq $counter ]; then
+				__docker_image_repos_and_tags
+				return
 			fi
 			;;
 	esac
@@ -165,16 +191,32 @@ _docker_commit()
 
 _docker_cp()
 {
-	if [ $cpos -eq $cword ]; then
-		__docker_containers_all
-	else
+	local counter=$(__docker_pos_first_nonflag)
+	if [ $cword -eq $counter ]; then
+		case "$cur" in
+			*:)
+				return
+				;;
+			*)
+				__docker_containers_all
+				COMPREPLY=( $( compgen -W "${COMPREPLY[*]}" -S ':' ) )
+				compopt -o nospace
+				return
+				;;
+		esac
+	fi
+	(( counter++ ))
+
+	if [ $cword -eq $counter ]; then
 		_filedir
+		return
 	fi
 }
 
 _docker_diff()
 {
-	if [ $cpos -eq $cword ]; then
+	local counter=$(__docker_pos_first_nonflag)
+	if [ $cword -eq $counter ]; then
 		__docker_containers_all
 	fi
 }
@@ -182,7 +224,7 @@ _docker_diff()
 _docker_events()
 {
 	case "$prev" in
-		-since)
+		--since)
 			return
 			;;
 		*)
@@ -200,45 +242,44 @@ _docker_events()
 
 _docker_export()
 {
-	if [ $cpos -eq $cword ]; then
+	local counter=$(__docker_pos_first_nonflag)
+	if [ $cword -eq $counter ]; then
 		__docker_containers_all
 	fi
 }
 
 _docker_help()
 {
-	if [ $cpos -eq $cword ]; then
+	local counter=$(__docker_pos_first_nonflag)
+	if [ $cword -eq $counter ]; then
 		COMPREPLY=( $( compgen -W "$commands" -- "$cur" ) )
 	fi
 }
 
 _docker_history()
 {
-	if [ $cpos -eq $cword ]; then
-		__docker_image_repos_and_tags
-	fi
+	case "$cur" in
+		-*)
+			COMPREPLY=( $( compgen -W "-q --quiet --no-trunc" -- "$cur" ) )
+			;;
+		*)
+			local counter=$(__docker_pos_first_nonflag)
+			if [ $cword -eq $counter ]; then
+				__docker_image_repos_and_tags_and_ids
+			fi
+			;;
+	esac
 }
 
 _docker_images()
 {
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "-a --no-trunc -q --viz" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "-q --quiet -a --all --no-trunc -v --viz -t --tree" -- "$cur" ) )
 			;;
 		*)
-			local counter=$cpos
-			while [ $counter -le $cword ]; do
-				case "${words[$counter]}" in
-					-*)
-						;;
-					*)
-						break
-						;;
-				esac
-				(( counter++ ))
-			done
-
-			if [ $counter -eq $cword ]; then
+			local counter=$(__docker_pos_first_nonflag)
+			if [ $cword -eq $counter ]; then
 				__docker_image_repos
 			fi
 			;;
@@ -247,7 +288,16 @@ _docker_images()
 
 _docker_import()
 {
-	return
+	local counter=$(__docker_pos_first_nonflag)
+	if [ $cword -eq $counter ]; then
+		return
+	fi
+	(( counter++ ))
+
+	if [ $cword -eq $counter ]; then
+		__docker_image_repos_and_tags
+		return
+	fi
 }
 
 _docker_info()
@@ -257,14 +307,30 @@ _docker_info()
 
 _docker_insert()
 {
-	if [ $cpos -eq $cword ]; then
-		__docker_image_repos_and_tags
+	local counter=$(__docker_pos_first_nonflag)
+	if [ $cword -eq $counter ]; then
+		__docker_image_repos_and_tags_and_ids
 	fi
 }
 
 _docker_inspect()
 {
-	__docker_containers_and_images
+	case "$prev" in
+		-f|--format)
+			return
+			;;
+		*)
+			;;
+	esac
+
+	case "$cur" in
+		-*)
+			COMPREPLY=( $( compgen -W "-f --format" -- "$cur" ) )
+			;;
+		*)
+			__docker_containers_and_images
+			;;
+	esac
 }
 
 _docker_kill()
@@ -272,10 +338,15 @@ _docker_kill()
 	__docker_containers_running
 }
 
+_docker_load()
+{
+	return
+}
+
 _docker_login()
 {
 	case "$prev" in
-		-e|-p|-u)
+		-u|--username|-p|--password|-e|--email)
 			return
 			;;
 		*)
@@ -284,7 +355,7 @@ _docker_login()
 
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "-e -p -u" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "-u --username -p --password -e --email" -- "$cur" ) )
 			;;
 		*)
 			;;
@@ -293,14 +364,23 @@ _docker_login()
 
 _docker_logs()
 {
-	if [ $cpos -eq $cword ]; then
-		__docker_containers_all
-	fi
+	case "$cur" in
+		-*)
+			COMPREPLY=( $( compgen -W "-f --follow" -- "$cur" ) )
+			;;
+		*)
+			local counter=$(__docker_pos_first_nonflag)
+			if [ $cword -eq $counter ]; then
+				__docker_containers_all
+			fi
+			;;
+	esac
 }
 
 _docker_port()
 {
-	if [ $cpos -eq $cword ]; then
+	local counter=$(__docker_pos_first_nonflag)
+	if [ $cword -eq $counter ]; then
 		__docker_containers_all
 	fi
 }
@@ -308,7 +388,13 @@ _docker_port()
 _docker_ps()
 {
 	case "$prev" in
-		-before-id|-n|-since-id)
+		--since-id|--before-id)
+			COMPREPLY=( $( compgen -W "$(docker ps -a -q)" -- "$cur" ) )
+			# TODO replace this with __docker_containers_all
+			# see https://github.com/dotcloud/docker/issues/3565
+			return
+			;;
+		-n)
 			return
 			;;
 		*)
@@ -317,7 +403,7 @@ _docker_ps()
 
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "-a --before-id -l -n --no-trunc -q -s --since-id" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "-q --quiet -s --size -a --all --no-trunc -l --latest --since-id --before-id -n" -- "$cur" ) )
 			;;
 		*)
 			;;
@@ -327,7 +413,7 @@ _docker_ps()
 _docker_pull()
 {
 	case "$prev" in
-		-t)
+		-t|--tag)
 			return
 			;;
 		*)
@@ -336,22 +422,31 @@ _docker_pull()
 
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "-t" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "-t --tag" -- "$cur" ) )
 			;;
 		*)
+			local counter=$(__docker_pos_first_nonflag '-t|--tag')
+			if [ $cword -eq $counter ]; then
+				__docker_image_repos_and_tags
+			fi
 			;;
 	esac
 }
 
 _docker_push()
 {
-	__docker_image_repos
+	local counter=$(__docker_pos_first_nonflag)
+	if [ $cword -eq $counter ]; then
+		__docker_image_repos
+		# TODO replace this with __docker_image_repos_and_tags
+		# see https://github.com/dotcloud/docker/issues/3411
+	fi
 }
 
 _docker_restart()
 {
 	case "$prev" in
-		-t)
+		-t|--time)
 			return
 			;;
 		*)
@@ -360,7 +455,7 @@ _docker_restart()
 
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "-t" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "-t --time" -- "$cur" ) )
 			;;
 		*)
 			__docker_containers_all
@@ -372,7 +467,7 @@ _docker_rm()
 {
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "-v" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "-v --volumes -l --link" -- "$cur" ) )
 			;;
 		*)
 			__docker_containers_stopped
@@ -382,7 +477,7 @@ _docker_rm()
 
 _docker_rmi()
 {
-	__docker_image_repos_and_tags
+	__docker_image_repos_and_tags_and_ids
 }
 
 _docker_run()
@@ -394,7 +489,15 @@ _docker_run()
 		--volumes-from)
 			__docker_containers_all
 			;;
-		-a|-c|--dns|-e|--entrypoint|-h|--lxc-conf|-m|-p|-u|-v|-w)
+		-v|--volume)
+			# TODO something magical with colons and _filedir ?
+			return
+			;;
+		-e|--env)
+			COMPREPLY=( $( compgen -e -- "$cur" ) )
+			return
+			;;
+		--entrypoint|-h|--hostname|-m|--memory|-u|--username|-w|--workdir|-c|--cpu-shares|-n|--name|-a|--attach|--link|-p|--publish|--expose|--dns|--lxc-conf)
 			return
 			;;
 		*)
@@ -403,45 +506,61 @@ _docker_run()
 
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "-a -c --cidfile -d --dns -e --entrypoint -h -i --lxc-conf -m -n -p --privileged -t -u -v --volumes-from -w" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "--rm -d --detach -n --networking --privileged -P --publish-all -i --interactive -t --tty --cidfile --entrypoint -h --hostname -m --memory -u --username -w --workdir -c --cpu-shares --sig-proxy --name -a --attach -v --volume --link -e --env -p --publish --expose --dns --volumes-from --lxc-conf" -- "$cur" ) )
 			;;
 		*)
-			local counter=$cpos
-			while [ $counter -le $cword ]; do
-				case "${words[$counter]}" in
-					-a|-c|--cidfile|--dns|-e|--entrypoint|-h|--lxc-conf|-m|-p|-u|-v|--volumes-from|-w)
-						(( counter++ ))
-						;;
-					-*)
-						;;
-					*)
-						break
-						;;
-				esac
-				(( counter++ ))
-			done
+			local counter=$(__docker_pos_first_nonflag '--cidfile|--volumes-from|-v|--volume|-e|--env|--entrypoint|-h|--hostname|-m|--memory|-u|--username|-w|--workdir|-c|--cpu-shares|-n|--name|-a|--attach|--link|-p|--publish|--expose|--dns|--lxc-conf')
 
-			if [ $counter -eq $cword ]; then
-				__docker_image_repos_and_tags
+			if [ $cword -eq $counter ]; then
+				__docker_image_repos_and_tags_and_ids
 			fi
 			;;
 	esac
 }
 
+_docker_save()
+{
+	local counter=$(__docker_pos_first_nonflag)
+	if [ $cword -eq $counter ]; then
+		__docker_image_repos_and_tags_and_ids
+	fi
+}
+
 _docker_search()
 {
-	COMPREPLY=( $( compgen -W "--no-trunc" "--stars" "--trusted" -- "$cur" ) )
+	case "$prev" in
+		-s|--stars)
+			return
+			;;
+		*)
+			;;
+	esac
+
+	case "$cur" in
+		-*)
+			COMPREPLY=( $( compgen -W "--no-trunc -t --trusted -s --stars" -- "$cur" ) )
+			;;
+		*)
+			;;
+	esac
 }
 
 _docker_start()
 {
-	__docker_containers_stopped
+	case "$cur" in
+		-*)
+			COMPREPLY=( $( compgen -W "-a --attach -i --interactive" -- "$cur" ) )
+			;;
+		*)
+			__docker_containers_stopped
+			;;
+	esac
 }
 
 _docker_stop()
 {
 	case "$prev" in
-		-t)
+		-t|--time)
 			return
 			;;
 		*)
@@ -450,7 +569,7 @@ _docker_stop()
 
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "-t" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "-t --time" -- "$cur" ) )
 			;;
 		*)
 			__docker_containers_running
@@ -460,12 +579,31 @@ _docker_stop()
 
 _docker_tag()
 {
-	COMPREPLY=( $( compgen -W "-f" -- "$cur" ) )
+	case "$cur" in
+		-*)
+			COMPREPLY=( $( compgen -W "-f --force" -- "$cur" ) )
+			;;
+		*)
+			local counter=$(__docker_pos_first_nonflag)
+
+			if [ $cword -eq $counter ]; then
+				__docker_image_repos_and_tags
+				return
+			fi
+			(( counter++ ))
+
+			if [ $cword -eq $counter ]; then
+				__docker_image_repos_and_tags
+				return
+			fi
+			;;
+	esac
 }
 
 _docker_top()
 {
-	if [ $cpos -eq $cword ]; then
+	local counter=$(__docker_pos_first_nonflag)
+	if [ $cword -eq $counter ]; then
 		__docker_containers_running
 	fi
 }
@@ -482,7 +620,6 @@ _docker_wait()
 
 _docker()
 {
-	local cur prev words cword command="docker" counter=1 word cpos
 	local commands="
 			attach
 			build
@@ -498,6 +635,7 @@ _docker()
 			insert
 			inspect
 			kill
+			load
 			login
 			logs
 			port
@@ -508,6 +646,7 @@ _docker()
 			rm
 			rmi
 			run
+			save
 			search
 			start
 			stop
@@ -518,18 +657,20 @@ _docker()
 		"
 
 	COMPREPLY=()
+	local cur prev words cword
 	_get_comp_words_by_ref -n : cur prev words cword
 
+	local command='docker'
+	local counter=1
 	while [ $counter -lt $cword ]; do
-		word="${words[$counter]}"
-		case "$word" in
+		case "${words[$counter]}" in
 			-H)
 				(( counter++ ))
 				;;
 			-*)
 				;;
 			*)
-				command="$word"
+				command="${words[$counter]}"
 				cpos=$counter
 				(( cpos++ ))
 				break