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zsh: fix completion when docker output only has the header line 

Unfortunately, `(f)` aka `(ps:\n:)` flag will not create an array when
there is only one line. The subsequent use of indexes will then affect
the string. This leads to `docker rmi <tab>` to complete on the header
line instead of nothing.

Therefore, for each use of `(f)`, we ensure that we have an extra new
line to be sure we get an array.

Credit to @povesteam for the original report and fix in #27373.

Signed-off-by: Vincent Bernat <vincent@bernat.im>
This commit is contained in:
Vincent Bernat 2016-10-17 17:23:09 +02:00 committed by Tibor Vass
parent 77bcb1c514
commit 38d93769fe
1 changed files with 10 additions and 10 deletions
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20
contrib/completion/zsh/_docker
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@ -57,7 +57,7 @@ __docker_get_containers() {
type=$1; shift
[[ $kind = (stopped|all) ]] && args=($args -a)
lines=(${(f)"$(_call_program commands docker $docker_options ps --format 'table' --no-trunc $args)"})
lines=(${(f)${:-"$(_call_program commands docker $docker_options ps --format 'table' --no-trunc $args)"$'\n'}})
# Parse header line to find columns
local i=1 j=1 k header=${lines[1]}
@ -153,7 +153,7 @@ __docker_images() {
[[ $PREFIX = -* ]] && return 1
integer ret=1
declare -a images
images=(${${${(f)"$(_call_program commands docker $docker_options images)"}[2,-1]}/(#b)([^ ]##) ##([^ ]##) ##([^ ]##)*/${match[3]}:${(r:15:: :::)match[2]} in ${match[1]}})
images=(${${${(f)${:-"$(_call_program commands docker $docker_options images)"$'\n'}}[2,-1]}/(#b)([^ ]##) ##([^ ]##) ##([^ ]##)*/${match[3]}:${(r:15:: :::)match[2]} in ${match[1]}})
_describe -t docker-images "images" images && ret=0
__docker_repositories_with_tags && ret=0
return ret
@ -162,7 +162,7 @@ __docker_images() {
__docker_repositories() {
[[ $PREFIX = -* ]] && return 1
declare -a repos
repos=(${${${(f)"$(_call_program commands docker $docker_options images)"}%% *}[2,-1]})
repos=(${${${(f)${:-"$(_call_program commands docker $docker_options images)"$'\n'}}%% *}[2,-1]})
repos=(${repos#<none>})
_describe -t docker-repos "repositories" repos
}
@ -172,7 +172,7 @@ __docker_repositories_with_tags() {
integer ret=1
declare -a repos onlyrepos matched
declare m
repos=(${${${${(f)"$(_call_program commands docker $docker_options images)"}[2,-1]}/ ##/:::}%% *})
repos=(${${${${(f)${:-"$(_call_program commands docker $docker_options images)"$'\n'}}[2,-1]}/ ##/:::}%% *})
repos=(${${repos%:::<none>}#<none>})
# Check if we have a prefix-match for the current prefix.
onlyrepos=(${repos%::*})
@ -208,7 +208,7 @@ __docker_search() {
if ( [[ ${(P)+cachename} -eq 0 ]] || _cache_invalid ${cachename#_} ) \
&& ! _retrieve_cache ${cachename#_}; then
_message "Searching for ${searchterm}..."
result=(${${${(f)"$(_call_program commands docker $docker_options search $searchterm)"}%% *}[2,-1]})
result=(${${${(f)${:-"$(_call_program commands docker $docker_options search $searchterm)"$'\n'}}%% *}[2,-1]})
_store_cache ${cachename#_} result
fi
_wanted dockersearch expl 'available images' compadd -a result
@ -509,7 +509,7 @@ __docker_get_networks() {
type=$1; shift
lines=(${(f)"$(_call_program commands docker $docker_options network ls)"})
lines=(${(f)${:-"$(_call_program commands docker $docker_options network ls)"$'\n'}})
# Parse header line to find columns
local i=1 j=1 k header=${lines[1]}
@ -725,7 +725,7 @@ __docker_nodes() {
filter=$1; shift
[[ $filter != "none" ]] && args=("-f $filter")
lines=(${(f)"$(_call_program commands docker $docker_options node ls $args)"})
lines=(${(f)${:-"$(_call_program commands docker $docker_options node ls $args)"$'\n'}})
# Parse header line to find columns
local i=1 j=1 k header=${lines[1]}
declare -A begin end
@ -886,7 +886,7 @@ __docker_complete_plugins() {
local line s
declare -a lines plugins
lines=(${(f)"$(_call_program commands docker $docker_options plugin ls)"})
lines=(${(f)${:-"$(_call_program commands docker $docker_options plugin ls)"$'\n'}})
# Parse header line to find columns
local i=1 j=1 k header=${lines[1]}
@ -1012,7 +1012,7 @@ __docker_services() {
type=$1; shift
lines=(${(f)"$(_call_program commands docker $docker_options service ls)"})
lines=(${(f)${:-"$(_call_program commands docker $docker_options service ls)"$'\n'}})
# Parse header line to find columns
local i=1 j=1 k header=${lines[1]}
@ -1301,7 +1301,7 @@ __docker_volumes() {
integer ret=1
declare -a lines volumes
lines=(${(f)"$(_call_program commands docker $docker_options volume ls)"})
lines=(${(f)${:-"$(_call_program commands docker $docker_options volume ls)"$'\n'}})
# Parse header line to find columns
local i=1 j=1 k header=${lines[1]}