Used in a custom command, noarg tells the command that its argument list have not been used
finally, and so they must be evaluated next in the G'MIC pipeline, just as if the custom
command takes no arguments at all.
Use this command to write a custom command which can decide if it takes arguments or not.
G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing
G'MIC is an open-source software distributed under the
CeCILL free software licenses (LGPL-like and/or GPL-compatible).
Copyrights (C) Since July 2008,
David Tschumperlé - GREYC UMR CNRS 6072, Image Team.