Function is_bare_character 

pub fn is_bare_character(key: KeyEvent) -> bool

Whether key is a bare printable character: one that has to reach a text field, or trigger a plain single-letter binding, rather than a chord.

The counterpart of is_command, and deliberately stricter than its negation: this also excludes AltGr (Control + Alt) and plain Alt, which do produce characters but never a bare one. A widget matching a plain letter (y to confirm, j to move) must gate on this, or both Ctrl+Y and AltGr+Y silently answer the dialog. Shift stays allowed: it is what makes the character uppercase.

Examples

use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
use ratada::input::is_bare_character;

let plain = KeyEvent::new(KeyCode::Char('y'), KeyModifiers::NONE);
assert!(is_bare_character(plain));

// Shift only decides the character's case.
let shifted = KeyEvent::new(KeyCode::Char('Y'), KeyModifiers::SHIFT);
assert!(is_bare_character(shifted));

let ctrl_y = KeyEvent::new(KeyCode::Char('y'), KeyModifiers::CONTROL);
assert!(!is_bare_character(ctrl_y));

let alt_gr = KeyEvent::new(
    KeyCode::Char('@'),
    KeyModifiers::CONTROL | KeyModifiers::ALT,
);
assert!(!is_bare_character(alt_gr));

// Alt alone is a chord too, and it is the only case the `Control` half of
// the check does not already cover.
let alt_y = KeyEvent::new(KeyCode::Char('y'), KeyModifiers::ALT);
assert!(!is_bare_character(alt_y));

// Not a character at all.
let enter = KeyEvent::new(KeyCode::Enter, KeyModifiers::NONE);
assert!(!is_bare_character(enter));