James R. Barlow ea7ad7d683 Handle non-UTF-8 DocumentInfo keys in repair_docinfo_nuls (closes #1540) ...

Some PDFs use a /Name dictionary key in /DocumentInfo whose bytes are not
valid UTF-8/PDFDocEncoding, e.g. a Latin-1 /Saks#e5r. Older pikepdf raised
UnicodeDecodeError while iterating such a block, crashing the pipeline
during PDF/A conversion. repair_docinfo_nuls is documented to log and
continue on a malformed DocumentInfo block, so catch UnicodeDecodeError
alongside TypeError.

Add a mock-based unit test that drives the decode-error branch (current
pikepdf surrogate-escapes instead of raising) and an end-to-end test over
the reporter's file, committed as docinfo_latin1_key.pdf.

2026-06-27 01:50:58 -07:00

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