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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"issues parsing AFM fonts","articleBody":"Investigating the linux failures in #12982 discovered that we are not parsing AFM files correctly.\r\n\r\nhttps://www.adobe.com/content/dam/acom/en/devnet/font/pdfs/5004.AFM_Spec.pdf for reference...\r\n\r\n1. weird values for underline information.  There are some files which have lines like\r\n   ```\r\n   UnderlinePosition -41,5039\r\n   UnderlineThickness 43,9453\r\n   ```\r\n   where we expect this to be a \"number\" which can a decimal, we are expecting to cast to float (see page 10 in the pdf).  An example of this (on arch) is `/usr/share/texmf-dist/fonts/afm/public/dejavu/DejaVuSansCondensed-BoldOblique.afm`\r\n2.  It seems that there are strings encoded as latin-1 (`b'Notice' b'Copyright (c) Typographer Mediengestaltung, 2000. All rights reserved. Zallman-Caps \\xa9 1991 by D. Rakowski.'` to get in ©.  According to the first section of the linked pdf AFM files are ASCII encoded.\r\n 3. ~Some fonts are parsing with weights that are not in the weight dictionary (which is what caused the \r\n   failure on azure~ \r\n   ```python\r\n   In [7]: [(f.fname, f.weight) for f in fm.afmlist if f.weight not in matplotlib.font_manager.weight_dict]\r\n   Out[7]: \r\n   [('/usr/share/texmf-dist/fonts/afm/public/aurical/AuriocusKalligraphicusRslant.afm',\r\n     'reverseoblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/AuriocusKalligraphicusSlant.afm',\r\n     'oblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/AmiciLogoRslant.afm',\r\n     'reverseoblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/prodint/prodint.afm', 'plain'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/LukasSvatbaSlant.afm',\r\n     'oblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/JanaSkrivanaRslant.afm',\r\n     'reverseoblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/txfontsb/FreeSerifb-SmallCapsAlt.afm',\r\n     'smallcaps'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/LukasSvatbaRslant.afm',\r\n     'reverseoblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/cochineal/Cochineal-Italic.afm',\r\n     'italic'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/LukasSvatbaBoldRslant.afm',\r\n     'boldreverseoblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/tex-gyre/qcsbi.afm', 'bolditalic'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/JanaSkrivanaBoldRslant.afm',\r\n     'boldreverseoblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/mathpazo/fplmbb.afm',\r\n     'blackboardbold'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/dejavu/DejaVuSans-ExtraLight.afm',\r\n     'extra-light'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/JanaSkrivanaBoldSlant.afm',\r\n     'boldoblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/AuriocusKalligraphicusBoldRslant.afm',\r\n     'boldreverseoblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/AuriocusKalligraphicusBoldSlant.afm',\r\n     'boldoblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/AmiciLogoSlant.afm',\r\n     'oblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/txfontsb/FreeSerifb-SmallCaps.afm',\r\n     'smallcaps'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/AmiciLogoBoldRslant.afm',\r\n     'boldreverseoblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/AmiciLogoBoldSlant.afm',\r\n     'boldoblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/LukasSvatbaBoldSlant.afm',\r\n     'boldoblique'),\r\n    ('/usr/share/texmf-dist/fonts/afm/public/aurical/JanaSkrivanaSlant.afm',\r\n     'oblique')]\r\n   \r\n   ```\r\n   there are mostly weight that should have been split into a weight + a slant or weight + style.\r\n","author":{"url":"https://github.com/tacaswell","@type":"Person","name":"tacaswell"},"datePublished":"2018-12-14T05:18:56.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":8},"url":"https://github.com/12987/matplotlib/issues/12987"}