Function plg_rt_b_writeq_1 

#[unsafe(no_mangle)]
pub extern "C" fn plg_rt_b_writeq_1(m: *mut Machine, term: u64) -> i32

writeq/1: like write/1 but quotes atoms that wouldn’t read back unquoted (issue #33), e.g. writeq('hello world') → 'hello world'. No trailing newline. Routed through the Machine’s sink like write/1.