Make handout figure PDFs reproducible#98
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asy's bundled Ghostscript stamps /CreationDate, /ModDate, /ID, and the embedded XMP metadata with wall-clock values, producing a spurious diff on every re-render. The Windows GS builds available here ignore SOURCE_DATE_EPOCH and the -dOmit* flags, so the export script now patches those fields in place using values derived from the .asy mtime and a SHA-256 of its contents - same source, same PDF. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Summary
/CreationDate,/ModDate,/ID, and the embedded XMP metadata with wall-clock values, producing a spurious diff on every re-render of an unchanged.asy.SOURCE_DATE_EPOCHand the-dOmit*flags, so the export script now post-patches those fields in place using values derived from the.asymtime and a SHA-256 of its contents. Same source -> same PDF, byte-for-byte.Generated with Claude Code