Appearance
Reverse Index at Scroll Top
RI (ESC M) at the top of the scroll region scrolls the entire region down, inserting a blank line at the top. This is the inverse of a newline at the bottom of the scroll region. Used for smooth scrolling and status line implementations.
How this is tested: Set scroll region, write MARKER at top, reverse index — verify MARKER shifted from row 0 to row 1 via
getCell(1,0).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 |