Grzegorz MartensandClaude Opus 5.5 5f3fde33d6 M11: tests for what Monochrome Images keeps, and for the fax bounds; Retain's wording ...

Mutation testing found behaviour no test held, now covered:
- a Group 4 halftone above 450 ppi isn't resampled and stays byte for
  byte, alone by default and behind ASCIIHexDecode with Retain;
- under Retain a resampled Flate scan stays Flate, though Group 4 would
  be smaller (ragged bands);
- sixteen-bit grey of only 0x0000 and 0xFFFF keeps its bytes;
- a busy Group 4 image behind ASCIIHexDecode, whose code is over three
  times its raster, decodes within the fax bound and is stored again as
  Group 4 alone. Redaction's busy-fax test is that busy again: since the
  bound for other images is three times the raster, the old checkerboard
  fitted it, and dropping the fax bound passed.
The redaction README says three times, and doc_optimize's description
says what Retain keeps: CCITT stays CCITT, anything else becomes Flate.

From reviews with the pdfcraft-review skill.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01P6yUtvWGPsJpMLyh6pxSXG

2026-10-29 20:48:03 +01:00

..

jpeg_color_transform.rs

style: rustfmt the cancellation test

2026-10-23 10:53:16 +02:00

optimize.rs

M11: tests for what Monochrome Images keeps, and for the fax bounds; Retain's wording

2026-10-29 20:48:03 +01:00