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#helper

local comp cmd1 cmd2 pat val name

# Completing in command position? If not we set up `cmd1' and `cmd2' as
# two strings we have search in the completion definition arrays (e.g.
# a path and the last path name component).

if [[ $CONTEXT == command ]]; then
  comp="$comps[--command--]"
  [[ -z "$comp" ]] || callcomplete comps --command-- "$@" || return 1
  return 0
elif [[ "$COMMAND[1]" == '=' ]]; then
  eval cmd1\=$COMMAND
  cmd2="$COMMAND[2,-1]"
elif [[ "$COMMAND" == */* ]]; then
  cmd1="$COMMAND"
  cmd2="${COMMAND:t}"
else
  cmd1="$COMMAND"
  eval cmd2=$(whence -p $COMMAND)
fi

# See if there are any matching pattern completions.

if (( $#patcomps )); then
  for i in "$patcomps[@]"; do
    pat="${i% *}"
    val="${i#* }"
    if [[ "$cmd1" == $~pat || "$cmd2" == $~pat ]]; then
      callcomplete patcomps "$pat" "$@" || return 1
    fi
  done
fi

# Now look up the two names in the normal completion array.

name="$cmd1"
comp="$comps[$cmd1]"

if [[ -z "$comp" ]]; then
  name="$cmd2"
  comp="$comps[$cmd2]"
fi

# And generate the matches, probably using default completion.

if [[ -z "$comp" ]]; then
  name=--default--
  comp="$comps[--default--]"
fi
[[ -z "$comp" ]] || callcomplete comps "$name" "$@" || return 1

return 0