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zsh/Completion/Core/_expand
2000-04-01 20:43:43 +00:00

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#autoload
# This completer function is intended to be used as the first completer
# function and allows one to say more explicitly when and how the word
# from the line should be expanded than expand-or-complete.
# This function will allow other completer functions to be called if
# the expansions done produce no result or do not change the original
# word from the line.
setopt localoptions nullglob
[[ _matcher_num -gt 1 ]] && return 1
local exp word="$PREFIX$SUFFIX" sort expr expl subd suf=" "
# First, see if we should insert all *completions*.
if zstyle -s ":completion:${curcontext}:" completions expr &&
[[ "${(e):-\$[$expr]}" -eq 1 ]]; then
compstate[insert]=all
return 1
fi
# In exp we will collect the expansion.
exp=("$word")
# First try substitution. That weird thing spanning multiple lines
# changes quoted spaces, tabs, and newlines into spaces.
zstyle -s ":completion:${curcontext}:" substitute expr &&
[[ "${(e):-\$[$expr]}" -eq 1 ]] &&
exp=( "${(e)exp//\\[
]/ }" )
# If the array is empty, store the original string again.
(( $#exp )) || exp=("$word")
subd=("$exp[@]")
# Now try globbing.
zstyle -s ":completion:${curcontext}:" glob expr &&
[[ "${(e):-\$[$expr]}" -eq 1 ]] &&
exp=( ${~exp} )
# If we don't have any expansions or only one and that is the same
# as the original string, we let other completers run.
(( $#exp )) || exp=("$subd[@]")
[[ $#exp -eq 1 && "$exp[1]" = "$word"(|\(N\)) ]] && return 1
# With subst-globs-only we bail out if there were no glob expansions,
# regardless of any substitutions
zstyle -s ":completion:${curcontext}:" subst-globs-only expr &&
[[ "${(e):-\$[$expr]}" -eq 1 && "$subd" = "$exp"(|\(N\)) ]] && return 1
# Now add as matches whatever the user requested.
zstyle -s ":completion:${curcontext}:" sort sort
[[ "$sort" = (yes|true|1|on) ]] && exp=( "${(@o)exp}" )
# If there is only one expansion, add a suitable suffix
(($#exp == 1)) && suf='' && [[ -d $exp && "$exp[1]" != */ ]] && suf='/'
if [[ -z "$compstate[insert]" ]] ;then
_description all-expansions expl 'all expansions' "o:$word"
compadd "$expl[@]" -UQ -qS "$suf" - "$exp"
else
_tags all-expansions expansions original
if _requested all-expansions; then
_description all-expansions expl 'all expansions'
compadd "$expl[@]" -UQ -qS "$suf" - "$exp"
fi
if [[ $#exp -gt 1 ]] && _requested expansions; then
if [[ "$sort" = menu ]]; then
_description expansions expl expansions "o:$word"
else
_description -V expansions expl expansions "o:$word"
fi
compadd "$expl[@]" -UQ - "$exp[@]"
fi
_requested original expl original && compadd "$expl[@]" -UQ - "$word"
compstate[insert]=menu
fi
return 0