Function libnotcurses_sys::notcurses_lex_margins

pub unsafe extern "C" fn notcurses_lex_margins(
    op: *const c_char, 
    opts: *mut notcurses_options
) -> c_int

Lex a margin argument according to the standard Notcurses definition. There can be either a single number, which will define all margins equally, or there can be four numbers separated by commas.