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function __fish_complete_subcommand -d "Complete subcommand"
set -l res ""
set -l had_cmd 0
set -l cmd (commandline -cop) (commandline -ct)
set -l skip_next 1
for i in $cmd
if test "$skip_next" = 1
set skip_next 0
continue
end
if test "$had_cmd" = 1
set res "$res $i"
else
if contains -- $i $argv
set skip_next 1
continue
end
switch $i
case '-*'
case '*=*'
case '*'
set had_cmd 1
set res $i
end
end
end
printf "%s\n" (complete -C$res)
end
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