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Cursor position (CUP)
ESC [ row ; col HCUP (Cursor Position) moves the cursor to an absolute row and column. The sequence is
ESC [ row ; col H, where row and column are 1-based. ESC [ H (no parameters) moves to the home position (1,1). This is the most fundamental cursor positioning command and is used by every full-screen TUI application.How this is testedautomated
Send
Send
\x1b[5;10H (CUP), verify cursor is at row 4, col 9 (0-based). In app mode, query with DSR 6 and verify response \x1b[5;10R.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 |