# rl_store_function Install a Perl code reference as the callback backing function-pointer slot `$id`. The current build stores the reference but does not yet invoke Perl-side callbacks — a future phase wires the C trampoline through. #### NOTE Unimplemented today Callback dispatch is a stub: the stored coderef is never invoked. `rl_completion_entry_function` and other function hooks therefore fall back to readline defaults.