Epub files not being cleaned
I don't know if this affects all epubs, but I get the following error when I try running mat2 on some of mine:
ERROR: In file book1.epub, element META-INF/encryption.xml's format (text/xml) isn't supported
ERROR: In file book1.epub, element OEBPS/Fonts/font00115.ttf's format (font/ttf) isn't supported
ERROR: In file book2.epub, element content.opf's format (application/oebps-package+xml) isn't supportedI'm guessing it sees a file that isn't supported and aborts creating the cleaned file. I tried some others and they similarly fail on some file, usually xml. Empty files (format 'None') also throw it off. I think that unsupported files within the epub should just be skipped and the cleaned file still made, though maybe the error should still display.
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