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XTRESTORE — restore DEC private modes (CSI ? Pm r)
ESC [ ? Pm rXTRESTORE restores the most recently saved values for one or more DEC private modes. The sequence is
CSI ? Pm r where Pm is a semicolon-separated list of mode numbers. Always paired with a matching XTSAVE (CSI ? Pm s) earlier in the session.
Applications use this to clean up mode changes on exit without needing to remember (or query) the original values. Note that CSI Pt ; Pb r without the ? intermediate is DECSTBM (set top/bottom margin) — the question mark distinguishes the private-mode restore. Adopted by xterm, Ghostty, Kitty, WezTerm, foot, and other modern terminals.How this is testedautomated
Send
Send
\x1b[?7s followed by \x1b[?7r, verify the sequences are consumed and the terminal stays responsive.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 9 of 14 backends (64%)
Terminal Applications
| Terminal | Version | Support | Notes |
|---|---|---|---|
| iTerm2 | 3.6.9 | ✓ yes | Sequence consumed; terminal responsive |
| Ghostty | 1.3.1 | ✓ yes | Sequence consumed; terminal responsive |
| Terminal.app | 2.15 | ✓ yes | Sequence consumed; terminal responsive |
| Kitty | 0.46.2 | ✓ yes | XTRESTORE private mode restore not exposed via Python batch bridge |
| VS Code | 1.113.0 | ? unknown | |
| Warp | 0.2026.03.18.08.24.03 | ? unknown | |
| Cursor | 2.6.21 | ? unknown |
Headless Backends
Parser correctness only — a ✓ means the parser accepts the sequence.
| Backend | Version | Support | Notes |
|---|---|---|---|
| vt100.js | 0.2.1 | ✓ yes | |
| vterm | 0.2.0 | ✓ yes | |
| xterm.js | 5.5.0 | ✓ yes | |
| WezTerm | 0.1.0-fork.5 | ~ partial | XTRESTORE private mode restore not exposed in headless mode |
| Alacritty | 0.26.0 | ✗ no | XTRESTORE private mode restore not implemented by alacritty |