Quote:
Originally Posted by GERGE
Don't use this twice on the same font file, if added weight is too small or too much just start from the beginning. Adding weight twice sometimes damages glyphs too much.
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Are you saying not to use the generated font files as further input? If so, I agree with this.
Using the original files as input should always generate new files.
...unless
fontforge.font.save() does something silly like modifying existing files, rather than overwrite them. The documentation doesn't state either way
