Appearance
Inverse video (SGR 7)
ESC [ 7 mSGR 7 swaps the foreground and background colors of the text. The sequence is
ESC [ 7 m. Universally supported. Commonly used for selection highlighting, cursor rendering, and visual emphasis in TUI applications. Reset with SGR 27.How this is testedautomated
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\x1b[7mX, verify inverse=true on the cell.The same probe runs against headless backends (via Termless) and real terminal apps (via a daemon launched in each terminal). This lets us distinguish parser correctness from rendering correctness.
Analysis2026-04-06
Supported by all 12 tested terminals — universal adoption. Part of the Core TUI baseline.
Supported by 14 of 14 backends (100%)
Terminal Applications
| Terminal | Version | Support | Notes |
|---|---|---|---|
| iTerm2 | 3.6.9 | ✓ yes | |
| Ghostty | 1.3.1 | ✓ yes | |
| VS Code | ✓ yes | ||
| Warp | ✓ yes | ||
| Cursor | ✓ yes | ||
| Terminal.app | ✓ yes |