Enum OperatingMode 

pub enum OperatingMode {
    NonTty,
    PromptOnly,
    UartEcho,
    Interactive,
}

Represents the resolved concrete operating mode of the line editor.

OperatingMode determines how line-editor handles input streams, character echoing, escape sequences, line editing keybindings, and prompt rendering.

Variants

NonTty

Non-TTY mode (e.g., input redirected from a file, pipe, or non-interactive script).

• When used: Resolved when standard input is not a terminal stream, or when TerminalMode::NonTty is explicitly configured.
• Consequences: No prompt is printed to the output stream. Escape sequences, raw mode, completion, hints, and line-editing keybindings are completely disabled. Input bytes are read sequentially until a newline or EOF is reached.

PromptOnly

Prompt-only mode for unsupported or dumb terminals (e.g., TERM=dumb, cons25, emacs).

• When used: Resolved when the terminal capability check determines the terminal does not support ANSI/VT100 escape sequences.
• Consequences: The prompt is written to the output stream before reading input, but ANSI/VT100 control sequences (cursor positioning, line clearing, colorized hints) and raw mode editing are disabled. Standard stream line buffering applies.

UartEcho

UART character echo mode (e.g., TERM=uart or serial console).

• When used: Resolved when connected to a serial UART console that lacks full ANSI/VT100 screen manipulation but requires character-by-character echoing.
• Consequences: The prompt is printed, and typed characters are echoed back to the output stream byte-by-byte. Basic backspace erasing (\x08 \x08) is handled, but complex VT100 cursor movement and multi-line editing are disabled.

Interactive

Full interactive VT100/ANSI terminal mode.

• When used: Resolved when connected to an interactive TTY terminal supporting ANSI/VT100 control sequences (e.g., xterm, vt100, screen, tmux).
• Consequences: Full raw-mode line editing with VT100 escape sequence handling, cursor movement, history navigation, tab autocompletion, inline hints, and multi-line refresh. Writes a trailing newline upon line submission.

Trait Implementations

impl Clone for OperatingMode

fn clone(&self) -> OperatingMode

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for OperatingMode

impl Debug for OperatingMode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for OperatingMode

impl PartialEq for OperatingMode

fn eq(&self, other: &OperatingMode) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for OperatingMode