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Posters in macOS Terminal as plain colored cells

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Terminal.app draws block elements from the font, with the halves off the
cell's middle, so quadrant posters came out as rows of shifted dots. The
new cover style "cells" uses one background color per cell and no glyph;
auto picks it when TERM_PROGRAM is Apple_Terminal.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019reK4DUGYqDUjniWYJvwUW
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nils
2026-10-21 11:18:03 +02:00
co-authored by Claude Opus 5.5
parent 2aa28c7e18
commit 080ef9ec8e
8 changed files with 42 additions and 13 deletions
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CHANGELOG.md
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## Unreleased
- **Posters in macOS Terminal:** Terminal.app draws the half and quarter blocks from the font, and
their halves do not meet at the middle of the cell, so posters looked like rows of shifted dots.
`auto` now draws them there as plain colored cells (new `ui.cover_style` value `cells`): coarser,
but even. For real images on macOS use Ghostty or kitty.
- **Real images only when the terminal confirms it:** the terminal is asked whether it supports the
Kitty graphics protocol before real-image posters are used, so terminals that only look like kitty
or Ghostty no longer get graphics commands printed as text. On macOS the sextant blocks are no