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completion/aliases: redirection, quote 

Alsö, some aliases are returned by `alias -p` with `alias -- xxxxx`...which confuses the function, so handle it specially.
pull/2091/head
John D Pell 2022-02-03 22:48:19 -08:00
parent 562eb6ce68
commit 4ba11dbaa2
1 changed files with 26 additions and 12 deletions
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38
completion/available/aliases.completion.bash
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@ -10,7 +10,7 @@ about-plugin 'Automatic completion of aliases'
# Automatically add completion for all aliases to commands having completion functions
function _bash-it-component-completion-callback-on-init-aliases() {
local namespace="alias_completion"
local tmp_file completion_loader alias_name line completions
local tmp_file completion_loader alias_name line completions chars
local alias_arg_words new_completion compl_func compl_wrapper alias_defn
# create array of function completion triggers, keeping multi-word triggers together
@ -20,28 +20,42 @@ function _bash-it-component-completion-callback-on-init-aliases() {
completions=("${completions[@]##complete -* * -}") # strip all but last option plus trigger(s)
completions=("${completions[@]#complete -}") # strip anything missed
completions=("${completions[@]#? * }") # strip last option and arg, leaving only trigger(s)
completions=("${completions[@]#? }") # strip anything missed
#TODO: this will fail on some completions...
# create temporary file for wrapper functions and completions
tmp_file="$(mktemp -t "${namespace}-${RANDOM}XXXXXX")" || return 1
completion_loader="$(complete -p -D 2> /dev/null | sed -Ene 's/.* -F ([^ ]*).*/\1/p')"
IFS=$'\n' read -r completion_loader < <(complete -p -D 2> /dev/null)
if [[ "${completion_loader#complete }" =~ '-F'[[:space:]]([[:alnum:]_]+)[[:space:]] ]]; then
completion_loader="${BASH_REMATCH[1]}"
else
completion_loader=""
fi
# read in "<alias> '<aliased command>' '<command args>'" lines from defined aliases
# some aliases do have backslashes that needs to be interpreted
# shellcheck disable=SC2162
while read line; do
line="${line#alias -- }"
line="${line#alias }"
alias_name="${line%%=*}"
alias_defn="${line#*=}" # alias definition
alias_defn="${line#*=\'}" # alias definition
alias_defn="${alias_defn%\'}"
alias_cmd="${alias_defn%%[[:space:]]*}" # first word of alias
alias_cmd="${alias_cmd:1}" # lose opening quotation mark
alias_args="${alias_defn#*[[:space:]]}" # everything after first word
alias_args="${alias_args%\'}" # lose ending quotation mark
if [[ ${alias_defn} == ${alias_cmd} ]]; then
alias_args=''
else
alias_args="${alias_defn#*[[:space:]]}" # everything after first word
fi
# skip aliases to pipes, boolean control structures and other command lists
[[ "${alias_args}" =~ [\|\&\;\)\(\n] ]] && continue
chars='\|\&\;\)\(\n\<\>'
if [[ "${alias_defn}" =~ [$chars] ]]; then
continue
fi
# avoid expanding wildcards
read -a alias_arg_words <<< "$alias_args"
read -ra alias_arg_words <<< "$alias_args"
# skip alias if there is no completion function triggered by the aliased command
if ! _bash-it-array-contains-element "$alias_cmd" "${completions[@]}"; then
@ -65,8 +79,8 @@ function _bash-it-component-completion-callback-on-init-aliases() {
if [[ "${compl_func#_"$namespace"::}" == "$compl_func" ]]; then
compl_wrapper="_${namespace}::${alias_name}"
echo "function $compl_wrapper {
local compl_word=\$2
local prec_word=\$3
local compl_word=\${2?}
local prec_word=\${3?}
# check if prec_word is the alias itself. if so, replace it
# with the last word in the unaliased form, i.e.,
# alias_cmd + ' ' + alias_args.
@ -75,11 +89,11 @@ function _bash-it-component-completion-callback-on-init-aliases() {
prec_word=\${prec_word#* }
fi
(( COMP_CWORD += ${#alias_arg_words[@]} ))
COMP_WORDS=($alias_cmd $alias_args \${COMP_WORDS[@]:1})
COMP_WORDS=(\"$alias_cmd\" \"${alias_arg_words[@]}\" \"\${COMP_WORDS[@]:1}\")
(( COMP_POINT -= \${#COMP_LINE} ))
COMP_LINE=\${COMP_LINE/$alias_name/$alias_cmd $alias_args}
(( COMP_POINT += \${#COMP_LINE} ))
$compl_func \"$alias_cmd\" \"\$compl_word\" \"\$prec_word\"
\"$compl_func\" \"$alias_cmd\" \"\$compl_word\" \"\$prec_word\"
}" >> "$tmp_file"
new_completion="${new_completion/ -F $compl_func / -F $compl_wrapper }"
fi