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Feature Reporting (TERM_FEATURES)
TERM_FEATURES is an environment variable proposed by iTerm2 for terminals to advertise their capabilities as a semicolon-delimited list of capability strings. Unlike escape-sequence-based detection, this approach allows applications to check capabilities without TTY I/O, making it suitable for non-interactive contexts. Adoption remains limited as most terminals prefer escape-sequence-based feature reporting.
How this is tested: Check whether the TERM_FEATURES environment variable is set in the terminal session.
Analysis2026-03-26
Not supported by any tested terminal. Part of the Rich TUI baseline.
Supported by 0 of 13 backends (0%)
Terminal Applications
| Terminal | Version | Support | Notes |
|---|---|---|---|
| iTerm2 | 3.6.9 | ✗ no | |
| Ghostty | 1.3.1 | ✗ no | |
| VS Code | 1.112.0 | ✗ no | |
| Warp | 0.2026.03.18.08.24.03 | ✗ no | |
| Cursor | 2.6.21 | ✗ no | |
| tmux | 3.6a | ✗ no | tmux does not pass through XTGETTCAP terminal-features query |
| Kitty | 0.46.2 | ✗ no | |
| Terminal.app | 2.15 | ✗ no | |
| GNU Screen | 5.0.1 | ✗ no | Screen does not support XTGETTCAP terminal-features query |