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[completion] Prevent running a command during 'eval'

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Do not attempt to provide fuzzy completion if the prefix contains a
pattern that may start an arbitraty command.

* $(...)
* `...`
* <(...)

Close #3459
This commit is contained in:
Junegunn Choi 2023-10-02 20:40:49 +09:00
parent 4fdc08295b
commit ee4ba104e7
No known key found for this signature in database
GPG Key ID: 254BC280FEF9C627
2 changed files with 8 additions and 2 deletions
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4
shell/completion.bash
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@ -170,7 +170,7 @@ __fzf_generic_path_completion() {
COMPREPLY=()
trigger=${FZF_COMPLETION_TRIGGER-'**'}
cur="${COMP_WORDS[COMP_CWORD]}"
if [[ "$cur" == *"$trigger" ]]; then
if [[ "$cur" == *"$trigger" ]] && [[ $cur != *'$('* ]] && [[ $cur != *'<('* ]] && [[ $cur != *'`'* ]]; then
base=${cur:0:${#cur}-${#trigger}}
eval "base=$base"
@ -235,7 +235,7 @@ _fzf_complete() {
cmd="${COMP_WORDS[0]//[^A-Za-z0-9_=]/_}"
trigger=${FZF_COMPLETION_TRIGGER-'**'}
cur="${COMP_WORDS[COMP_CWORD]}"
if [[ "$cur" == *"$trigger" ]]; then
if [[ "$cur" == *"$trigger" ]] && [[ $cur != *'$('* ]] && [[ $cur != *'<('* ]] && [[ $cur != *'`'* ]]; then
cur=${cur:0:${#cur}-${#trigger}}
selected=$(FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} ${FZF_COMPLETION_OPTS-} $str_arg" __fzf_comprun "${rest[0]}" "${args[@]}" -q "$cur" | $post | tr '\n' ' ')

6
shell/completion.zsh
View File

@ -137,6 +137,9 @@ __fzf_generic_path_completion() {
tail=$6
setopt localoptions nonomatch
if [[ $base = *'$('* ]] || [[ $base = *'<('* ]] || [[ $base = *'`'* ]]; then
return
fi
eval "base=$base"
[[ $base = *"/"* ]] && dir="$base"
while [ 1 ]; do
@ -304,6 +307,9 @@ fzf-completion() {
d_cmds=(${=FZF_COMPLETION_DIR_COMMANDS:-cd pushd rmdir})
[ -z "$trigger" ] && prefix=${tokens[-1]} || prefix=${tokens[-1]:0:-${#trigger}}
if [[ $prefix = *'$('* ]] || [[ $prefix = *'<('* ]] || [[ $prefix = *'`'* ]]; then
return
fi
[ -n "${tokens[-1]}" ] && lbuf=${lbuf:0:-${#tokens[-1]}}
if eval "type _fzf_complete_${cmd} > /dev/null"; then