OpenType font files #155
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OpenType font files #155
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In search for some inspiration, I scrolled through https://www.garykessler.net/library/file_sigs.html and font files piqued my interest. I'll start with a generic rule for the OpenType font format. It is, as one might expect starting with "Open" and all, a registered trademark of Microsoft. This signature matches on the file magic and then puts some sensible boundaries in place that I've observed in font files on my local installation.