A quick question, is it possible to modify the scale of the brush using some
functions in libgimp from plug-in side?
I know there is a gimp_brush_set_radius() function that could set the brush
radius, but it is not exactly the *scale* in the tool option and could bring
some problem when choosing some default brush that are not editable.
My current workaround is to duplicate the non-editable brush and modify its
radius on the clone then delete it. But I am wondering is there any better
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