I need some clarification on how the Script-Fu procedure
"gimp-layer-create-mask" acts with channels.
Supposing that the current image holds more than one channel, whether I
wanted to call such procedure with its second argument "mask-type" set to
"ADD-CHANNEL-MASK" (6) , how would the Script-Fu interpreter understand
which channel to consider? Or rather, with what additional command should I
specify the chosen channel?
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