BUG: Get font information more reliably when removing text#3252
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stefan6419846 merged 8 commits intopy-pdf:mainfrom Apr 15, 2025
Merged
BUG: Get font information more reliably when removing text#3252stefan6419846 merged 8 commits intopy-pdf:mainfrom
stefan6419846 merged 8 commits intopy-pdf:mainfrom
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Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## main #3252 +/- ##
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Coverage 96.59% 96.60%
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Files 53 53
Lines 8957 8979 +22
Branches 1648 1659 +11
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+ Hits 8652 8674 +22
Misses 183 183
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stefan6419846
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Apr 15, 2025
ash01ish
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stefan6419846
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## What's new ### New Features (ENH) - Add support for IndirectObject.__iter__ (#3228) by @bryan-brancotte - Allow filtering by font when removing text (#3216) by @samuelbradshaw ### Bug Fixes (BUG) - Add missing named destinations being ByteStringObjects (#3282) by @stefan6419846 - Get font information more reliably when removing text (#3252) by @samuelbradshaw - T* 2D Translation consistent with PDF 1.7 Spec (#3250) by @hackowitz-af - Add font stack to q/Q operations in layout mode (#3225) by @hackowitz-af - Avoid completely hiding image loading issues like exceeding image size limits (#3221) by @stefan6419846 - Using compress_identical_objects on transformed content duplicates differing content (#3197) by @danio - Consider BlackIs1 parameter for CCITTFaxDecode filter (#3196) by @stefan6419846 ### Robustness (ROB) - Deal with insufficient cm matrix during text extraction (#3283) by @stefan6419846 - Allow merging when annotations miss D entry (#3281) by @stefan6419846 - Fix merging documents if there are no Dests (#3280) by @stefan6419846 - Fix crash on malformed action in outline (#3278) by @larsga - Fix compression issues for removed images which might be None (#3246) by @stefan6419846 - Attempt to deal with non-rectangular FlateDecode streams (#3245) by @stefan6419846 - Handle some None values for broken PDF files (#3230) by @stefan6419846 ### Developer Experience (DEV) - Multiple style improvements by @j-t-1 - Update ruff to 0.11.0 by @stefan6419846 ### Maintenance (MAINT) - Conform ASCIIHexDecode implementation to specification (#3274) by @j-t-1 - Modify comments of filters that do not use decode_parms (#3260) by @j-t-1 ### Code Style (STY) - Simplify warnings & debugging in layout mode text extraction (#3271) by @hackowitz-af - Standardize mypy assert statements (#3276) by @j-t-1 [Full Changelog](5.4.0...5.5.0)
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Last month I contributed pull request #3216, an enhancement to
PdfWriter.removeText()that allows users to remove only the specified fonts. Since then, I've come across a few PDFs where my simple logic to find fonts wasn't working. This fix walks through the PDF structure to find font references more reliably. I also added a few explanatory comments.