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Scrollback accumulates
Tests whether lines scrolled off the top of the visible screen are preserved in the scrollback buffer. This is fundamental terminal behavior — without scrollback accumulation, users cannot scroll up to see previous output. Virtually all modern terminals maintain a scrollback buffer, though the maximum size varies.
How this is tested: Write 30 lines (exceeding the 24-row screen), verify total line count exceeds 24.
Analysis2026-03-26
Supported by all 8 tested terminals — universal adoption. Part of the Core TUI baseline.
Supported by 13 of 13 backends (100%)
Terminal Applications
| Terminal | Version | Support | Notes |
|---|---|---|---|
| iTerm2 | 3.6.9 | ✓ yes | |
| Ghostty | 1.3.1 | ✓ yes | |
| VS Code | 1.112.0 | ✓ yes | |
| Warp | 0.2026.03.18.08.24.03 | ✓ yes | |
| Cursor | 2.6.21 | ✓ yes | |
| tmux | 3.6a | ✓ yes | |
| Kitty | 0.46.2 | ✓ yes | |
| Terminal.app | 2.15 | ✓ yes | |
| GNU Screen | 5.0.1 | ✓ yes |