I'm seeing an odd case where glyph height in a CFF font doubles with autohinting (relative to using the Adobe engine).
I'm attaching the font in question. It's a subset that was embedded in a PDF file -- the glyphs are various math symbols. If I run "ftview 16 f1.cff", and then toggle autohinting on with the 'f' key, the glyphs get taller. Actually it doesn't seem to be 2x -- closer to 1.5x taller. I believe the shorter height is correct. I.e., the Adobe CFF engine is getting it right, and the autohinter is getting it wrong. I have no idea where this font came from -- I received the PDF file from a customer, and there's no useful info on how it was generated. So it's also possible that the font is broken. But I'm not sure how a broken font could trick the autohinter into increasing the height by that much. I'm using FreeType 2.5.2. Thanks for taking a look at this. - Derek
f1.cff
Description: Binary data
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