Appearance
Reset highlight background (OSC 117)
ESC ] 117 BELOSC 117 resets the selection highlight background color to the terminal's default. The sequence is
ESC ] 117 BEL. The highlight background is set via OSC 17. Terminals that support customizable selection colors use this to restore the default appearance. Support is limited to xterm and terminals with full xterm color protocol compatibility.How this is testedpartial
Send
Send
OSC 117 BEL and verify the terminal remains responsive (sequence consumed without error).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 3 tested terminals — universal adoption. Part of the Rich TUI baseline.
Supported by 5 of 14 backends (36%)
Terminal Applications
| Terminal | Version | Support | Notes |
|---|---|---|---|
| iTerm2 | 3.6.9 | ✓ yes | |
| Ghostty | 1.3.1 | ✓ yes | |
| Kitty | 0.46.2 | ✓ yes | |
| VS Code | 1.113.0 | ? unknown | |
| Warp | 0.2026.03.18.08.24.03 | ? unknown | |
| Cursor | 2.6.21 | ? unknown | |
| Terminal.app | 2.15 | ? unknown |