openai/codex · error · std::io::Error

Unsupported

Unsupported

Error message

keyboard enhancement reset is not implemented for the legacy Windows API

What it means

Error "keyboard enhancement reset is not implemented for the legacy Windows API" thrown in openai/codex.

Source

Thrown at codex-rs/tui/src/tui/keyboard_modes.rs:247

    let _ = execute!(
        stdout(),
        PopKeyboardEnhancementFlags,
        ResetKeyboardEnhancementFlags,
        DisableModifyOtherKeys
    );
}

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
struct ResetKeyboardEnhancementFlags;

impl Command for ResetKeyboardEnhancementFlags {
    fn write_ansi(&self, f: &mut impl fmt::Write) -> fmt::Result {
        f.write_str("\x1b[<u")
    }

    #[cfg(windows)]
    fn execute_winapi(&self) -> std::io::Result<()> {
        Err(std::io::Error::new(
            std::io::ErrorKind::Unsupported,
            "keyboard enhancement reset is not implemented for the legacy Windows API",
        ))
    }

    #[cfg(windows)]
    fn is_ansi_code_supported(&self) -> bool {
        false
    }
}

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
struct EnableModifyOtherKeys;

impl Command for EnableModifyOtherKeys {
    fn write_ansi(&self, f: &mut impl fmt::Write) -> fmt::Result {
        f.write_str("\x1b[>4;2m")
    }

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/tui/src/tui/keyboard_modes.rs:247 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/84afb141a128b762. Report an issue: GitHub.