Grzegorz MartensandClaude Opus 5.5 450c327c6b M11: black-and-white RGB stays RGB where grey would be drawn otherwise ...

- Packed to one bit, black-and-white DeviceRGB became DeviceGray. Where
  /DefaultGray or /DefaultRGB is in force (ISO 32000-2 §8.6.5.6), that
  drew it otherwise: through DefaultGray as grey, or no longer through
  DefaultRGB. The page walk now notes the images drawn, on any use, where
  a page's or form's resources (an enclosing one's included) name
  either, and those stay RGB. When a use couldn't be followed, every
  image counts as such.
- One whose soft mask has a /Matte stays RGB too: the matte has one
  number for each of the parent's components, three, and grey has one.
- The optimize README, the mono-compression parity note and doc_reduce's
  description said Group 3 to Group 4 wasn't done yet, that only images
  packed from eight bits could become Flate, and that the colour space
  and decode array always stay. They now match the code.

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

..

acrobat-features.toml

M11: black-and-white RGB stays RGB where grey would be drawn otherwise

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