Re: Textal interface to Guile

[Marius Vollmer]

Rob Browning <address@hidden> writes:

>                          gh_list(my_obj, SCM_EOL)));
>
> [...] I'm not sure whether you're supposed to use SCM_EOL or
> SCM_UNSPECIFIED, though I think SCM_EOL is right.  It mentions both
> in different contexts.

Nope, you should be using SCM_UNDEFINED.

Background: Both SCM_EOL and SCM_UNSPECIFIED can legitimately show up
in a list, but SCM_UNDEFINED will trigger a "variable unbound" error
when referenced (at certain strategically choosen points, it is not
checked for everywhere).  So SCM_UNDEFINED can be used to terminate
the arguments to gh_list, while SCM_EOL and SCM_UNSPECIFIED can not.