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Basic text rendering
Tests whether the terminal can render plain ASCII text at the cursor position. This is the most fundamental terminal capability — writing characters to the screen.
How this is testedautomated
Write "Hello", verify the text buffer contains "Hello". In app mode, verify cursor advanced to column 6.
Write "Hello", verify the text buffer contains "Hello". In app mode, verify cursor advanced to column 6.
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 |