在 Zsh 中，默认情况下，该tab键绑定到expand-or-complete。我想以编程方式访问按 产生的完成候选列表tab，以便我可以编写自己的函数并自行过滤列表。我知道 Zsh 附带一个“完成框架”，但我想自己做。
还有list-choices产生相同输出expand-or-complete但不提供选项卡循环功能的功能/小部件。
我在 Google 上进行了相当广泛的搜索，也浏览了 Zsh 源代码，但一无所获。任何帮助都将不胜感激。
答案1
我偶然发现了一个解决方案：zsh-capture-completion。其实有二 其他Unix Stack Exchange 网站上的问题几乎完全相同，我在这里都给出了答案。
脚本源代码zsh-capture-completion可以在这里找到：
#!/bin/zsh
zmodload zsh/zpty || { echo 'error: missing module zsh/zpty' >&2; exit 1 }
# spawn shell
zpty z zsh -f -i
# line buffer for pty output
local line
setopt rcquotes
() {
zpty -w z source $1
repeat 4; do
zpty -r z line
[[ $line == ok* ]] && return
done
echo 'error initializing.' >&2
exit 2
} =( <<< '
# no prompt!
PROMPT=
# load completion system
autoload compinit
compinit -d ~/.zcompdump_capture
# never run a command
bindkey ''^M'' undefined
bindkey ''^J'' undefined
bindkey ''^I'' complete-word
# send a line with null-byte at the end before and after completions are output
null-line () {
echo -E - $''\0''
}
compprefuncs=( null-line )
comppostfuncs=( null-line exit )
# never group stuff!
zstyle '':completion:*'' list-grouped false
# don''t insert tab when attempting completion on empty line
zstyle '':completion:*'' insert-tab false
# no list separator, this saves some stripping later on
zstyle '':completion:*'' list-separator ''''
# we use zparseopts
zmodload zsh/zutil
# override compadd (this our hook)
compadd () {
# check if any of -O, -A or -D are given
if [[ ${@[1,(i)(-|--)]} == *-(O|A|D)\ * ]]; then
# if that is the case, just delegate and leave
builtin compadd "$@"
return $?
fi
# ok, this concerns us!
# echo -E - got this: "$@"
# be careful with namespacing here, we don''t want to mess with stuff that
# should be passed to compadd!
typeset -a __hits __dscr __tmp
# do we have a description parameter?
# note we don''t use zparseopts here because of combined option parameters
# with arguments like -default- confuse it.
if (( $@[(I)-d] )); then # kind of a hack, $+@[(r)-d] doesn''t work because of line noise overload
# next param after -d
__tmp=${@[$[${@[(i)-d]}+1]]}
# description can be given as an array parameter name, or inline () array
if [[ $__tmp == \(* ]]; then
eval "__dscr=$__tmp"
else
__dscr=( "${(@P)__tmp}" )
fi
fi
# capture completions by injecting -A parameter into the compadd call.
# this takes care of matching for us.
builtin compadd -A __hits -D __dscr "$@"
setopt localoptions norcexpandparam extendedglob
# extract prefixes and suffixes from compadd call. we can''t do zsh''s cool
# -r remove-func magic, but it''s better than nothing.
typeset -A apre hpre hsuf asuf
zparseopts -E P:=apre p:=hpre S:=asuf s:=hsuf
# append / to directories? we are only emulating -f in a half-assed way
# here, but it''s better than nothing.
integer dirsuf=0
# don''t be fooled by -default- >.>
if [[ -z $hsuf && "${${@//-default-/}% -# *}" == *-[[:alnum:]]#f* ]]; then
dirsuf=1
fi
# just drop
[[ -n $__hits ]] || return
# this is the point where we have all matches in $__hits and all
# descriptions in $__dscr!
# display all matches
local dsuf dscr
for i in {1..$#__hits}; do
# add a dir suffix?
(( dirsuf )) && [[ -d $__hits[$i] ]] && dsuf=/ || dsuf=
# description to be displayed afterwards
(( $#__dscr >= $i )) && dscr=" -- ${${__dscr[$i]}##$__hits[$i] #}" || dscr=
echo -E - $IPREFIX$apre$hpre$__hits[$i]$dsuf$hsuf$asuf$dscr
done
}
# signal success!
echo ok')
zpty -w z "$*"$'\t'
integer tog=0
# read from the pty, and parse linewise
while zpty -r z; do :; done | while IFS= read -r line; do
if [[ $line == *$'\0\r' ]]; then
(( tog++ )) && return 0 || continue
fi
# display between toggles
(( tog )) && echo -E - $line
done
return 2
以下是脚本使用的示例：
══► % cd ~/.zsh_plugins
══► % zsh ./zsh-capture-completion/capture.zsh 'cd '
zaw/
zsh-capture-completion/
zsh-syntax-highlighting/
zsh-vimode-visual/
请注意上述命令中的空格字符。使用空格，脚本会提供可从当前目录进入的文件夹列表cd。如果没有空格，脚本将提供以 开头的所有命令的补全cd。
我还应该指出，即使提供的脚本/插件的作者也认为他的解决方案是“黑客式的”。如果有人知道更短或更直接的解决方案，我会很高兴接受它作为答案。