support bfrange having incorrect length in a cmap#1089
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the corpus file 0001413.pdf has an off-by-one error in its count for cmap bfranges. here we exit early if an unexpected endbfrange operator is encountered early. this matches the pdfbox behavior: https://github.com/apache/pdfbox/blob/067d56e4dbf5817158d1e910b9602d031ab2153d/fontbox/src/main/java/org/apache/fontbox/cmap/CMapParser.java#L373
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With this change we support parsing all 1000 documents of corpus set 0001 except the following. Corrupt:
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BobLd
approved these changes
Jul 19, 2025
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the corpus file 0001413.pdf has an off-by-one error in its count for cmap bfranges. here we exit early if an unexpected endbfrange operator is encountered early. this matches the pdfbox behavior:
https://github.com/apache/pdfbox/blob/067d56e4dbf5817158d1e910b9602d031ab2153d/fontbox/src/main/java/org/apache/fontbox/cmap/CMapParser.java#L373