Function keysym_for_key_spec 

fn keysym_for_key_spec(name: &str) -> u32

Keysym for one component of an xdotool-style key spec that is not a named key: a single literal character (a, 7, -, #) via the Unicode mapping, or a keysym NAME (minus, bracketleft, udiaeresis, …) via xkb’s name lookup (case-tolerant fallback so Minus still resolves). Returns 0 when the spec names no keysym.