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DECRARA — reverse attrs in rectangle
CSI Pt ; Pl ; Pb ; Pr ; Ps $ tDECRARA (
CSI Pt ; Pl ; Pb ; Pr ; Ps $ t) toggles the listed SGR attributes within a rectangular region. Each cell flips the listed bits — bold cells become non-bold, non-bold cells become bold, and so on. Like DECCARA, it leaves the characters alone and obeys DECSACE to operate on a rectangle or a stream. VT420-era applications used DECRARA to flash highlight a field on validation errors or to invert a selected row in a list.How this is testedpartial
Write text, send
Write text, send
\x1b[1;1;3;5;7$t (toggle inverse on rows 1-3 cols 1-5), verify the sequence is consumed.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 9 tested terminals — universal adoption. Part of the Unicode baseline.
Supported by 11 of 14 backends (79%)
Terminal Applications
| Terminal | Version | Support | Notes |
|---|---|---|---|
| iTerm2 | 3.6.9 | ✓ yes | sequence consumed |
| Ghostty | 1.3.1 | ✓ yes | sequence consumed |
| Terminal.app | 2.15 | ✓ yes | sequence consumed |
| Kitty | 0.46.2 | ✓ yes | sequence consumed |
| VS Code | 1.113.0 | ? unknown | |
| Warp | 0.2026.03.18.08.24.03 | ? unknown | |
| Cursor | 2.6.21 | ? unknown |