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|
#autoload
local output cmd pat pre
local -a var
local -A opts
(( $+_cmd_variant )) || typeset -gA _cmd_variant
zparseopts -D -A opts b: c: r:
: ${opts[-c]:=$words[1]}
while [[ $1 = *=* ]]; do
var+=( "${1%%\=*}" "${1#*=}" )
shift
done
if (( ${#precommands:|builtin_precommands} )); then
pre=command
elif (( $+opts[-b] && ( $precommands[(I)builtin] || $+builtins[$opts[-c]] ) )); then
(( $+opts[-r] )) && : ${(P)opts[-r]::=$opts[-b]}
return 0
elif (( $precommands[(I)builtin] )); then
pre=builtin
else
# Neither builtin nor command-forcing precommand specified,
# so no prefix is needed.
pre=
fi
if [[ $pre != builtin ]] && (( $+_cmd_variant[$opts[-c]] )); then
(( $+opts[-r] )) && : ${(P)opts[-r]::=${_cmd_variant[$opts[-c]]}}
[[ $_cmd_variant[$opts[-c]] = "$1" ]] && return 1
return 0
fi
output="$(_call_program variant $pre $opts[-c] "${@[2,-1]}" </dev/null 2>&1)"
for cmd pat in "$var[@]"; do
if [[ $output = *$~pat* ]]; then
(( $+opts[-r] )) && : ${(P)opts[-r]::=$cmd}
_cmd_variant[$opts[-c]]="$cmd"
return 0
fi
done
(( $+opts[-r] )) && : ${(P)opts[-r]::=$1}
[[ $pre != builtin ]] && _cmd_variant[$opts[-c]]="$1"
return 1
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