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Icon and title (OSC 0)
Category: extensions · Baseline: modern · Tags: Operating System Commands (OSC), Xterm Extensions · Specification ↗
ESC ] 0 ; title BELOSC 0 sets both the icon name and window title simultaneously. The sequence is
ESC ] 0 ; title ST. In practice, the "icon name" is a legacy concept from X11 window managers — most modern terminals treat OSC 0 identically to OSC 2 (window title only).How this is testedautomated
Send
Send
\x1b]0;My Title\x07 (OSC 0), verify getTitle() contains "My Title".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 Modern TUI baseline.
Supported by 14 of 14 backends (100%)
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 |