我創建了一個完成函式，其靈感來自如何創建自定義 Bash 完成腳本（它有一些明顯的錯誤，但我更正了這些錯誤）和GitHub 上的更新版本。
bash_completion_test
#!/bin/bash
#
# bash_completion_test
#
# from https://maskedbyte.com/how-to-create-a-custom-bash-completion-script/
# and https://github.com/SumuduLansakara/custom-bash-completion-script/blob/master/completer.sh
#
echo 'Begin bash_completion_test...'
# -------------------------------
# Generic hierarchical completion
# test definitions
_args=(add list remove)
list_args=(student teacher)
list_student_args=(age grade name)
list_student_grade_args=(-a -o --another --option)
list_teacher_args=(name)
function generic_hierarchical_completion_test() {
local arguments word_list_ptr word DEBUG
log='bash_completion_test.log'
echo -n '???' > $log # clear log file
DEBUG= #true # set variable for debugging info in log file
[[ $DEBUG ]] && echo -n > $log
# Array of individual words in the current command line
# see https://www.gnu.org/software/bash/manual/bash.html#index-COMP_005fWORDS
[[ $DEBUG ]] && echo "COMP_WORDS=${COMP_WORDS[@]}" >> $log
# Second word to last word in the current command line
arguments=("${COMP_WORDS[@]:1}")
[[ $DEBUG ]] && echo "arguments=${#arguments[@]}:${arguments[@]}" >> $log
# Remove last empty word from arguments
[[ "${#COMP_WORDS[@]}" -gt 1 ]] && unset 'arguments[${#arguments[@]}-1]'
[[ $DEBUG ]] && echo "arguments=${#arguments[@]}:${arguments[@]}" >> $log
# Create word list pointer variable from arguments while replacing spaces with '_'
IFS=_
word_list_ptr="${arguments[*]}_args[*]"
unset IFS
[[ $DEBUG ]] && echo "word_list_ptr=$word_list_ptr" >> $log
[[ $DEBUG ]] && echo "word_list=${!word_list_ptr}" >> $log
# -W <word list from variable indirected by word_list_ptr>
# COMP_CWORD: An index into ${COMP_WORDS} of the word containing the current cursor position.
# see https://www.gnu.org/software/bash/manual/bash.html#index-COMP_005fCWORD
word=${COMP_WORDS[${COMP_CWORD}]}
[[ $DEBUG ]] && echo "word=$word" >> $log
COMPREPLY=( $( compgen -W "${!word_list_ptr}" "$word" ) )
}
complete -F generic_hierarchical_completion_test ct
echo 'End bash_completion_test.'
ct
#!/bin/bash
echo ">> $# arguments: $*"
這運行良好，直到$ ct list student grade .
如果我$ ct list student grade TAB的結果是$ ct list student grade -. 到現在為止還挺好。
如果我$ ct list student grade -TABTAB的預期結果是：
$ ct list student grade -
--another --option -a -o
但現在它變成了@§$%&！
如果 I$ ct list student grade --TAB結果是$ ct list student grade -，即洗掉尾隨的連字符。
如果我$ ct list student grade -aTABTAB正確顯示了所有選項，但我的所有別名都是額外的（其中之一是alias a=alias）：
$ ct list student grade -a
--another --option -a -o .. a b bp c df kc ll ls x
如果我$ ct list student grade --aTAB收到錯誤：
$ ct list student grade --abash: compgen: --: invalid option
compgen: usage: compgen [-abcdefgjksuv] [-o option] [-A action] [-G globpat] [-W wordlist] [-F function] [-C command] [-X filterpat] [-P prefix] [-S suffix] [word]
如何正確處理短“ -...”和長“ --...”選項？
uj5u.com熱心網友回復：
如何正確處理短“-...”和長“--...”選項？
您必須將 compgen 選項和 word 分開。
compgen -W "<words>" -- "$word"
轉載請註明出處，本文鏈接：https://www.uj5u.com/caozuo/358068.html