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Erase to EOL (EL 0)
ESC [ 0 KEL 0 erases from the cursor position to the end of the line. The sequence is
ESC [ 0 K or ESC [ K (parameter defaults to 0). This is the most commonly used erase sequence — TUI applications use it after writing content on a line to clear any leftover characters from a previous render.How this is testedautomated
Write "XXXXX", move to col 1 via
Write "XXXXX", move to col 1 via
\x1b[1G, send \x1b[K (EL 0), verify cell at (0,0) is blank.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 |