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Blink (SGR 5)
SGR 5 causes text to blink at a steady rate. The sequence is
ESC [ 5 m. Many modern terminals intentionally do not implement blinking, as it is considered distracting and an accessibility concern. Terminals that do support it typically allow the user to disable it in preferences.Supported by 1 of 6 backends (17%)
Support Matrix
| Backend | Version | Support | Notes |
|---|---|---|---|
| Kitty | 0.40.0 | ✓ yes | |
| Alacritty | 0.26.0 | ~ partial | Not exposed via alacritty_terminal API |
| Ghostty | 1.3.1 | ~ partial | Ghostty parses SGR 5 but doesn't expose blink in cell data |
| WezTerm | 0.1.0-fork.5 | ~ partial | Not exposed via wezterm-term API |
| xterm.js | 5.5.0 | ~ partial | Parser handles SGR 5 but headless mode doesn't expose blink attribute |
| vt100 | 0.1.0 | ✗ no | Not implemented — pure TypeScript emulator |