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SGR reset clears attributes
Tests whether SGR 0 (
ESC [ 0 m) correctly clears all text attributes — bold, faint, italic, underline, blink, inverse, hidden, strikethrough, overline, and colors. This is the most basic reset and should leave the terminal in its default text rendering state.How this is testedautomated
Apply bold+italic+inverse via
Apply bold+italic+inverse via
\x1b[1;3;7mX then send \x1b[0mY, verify the second cell has all attributes cleared.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 13 of 14 backends (93%)
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 |