This one is because the parser for the most part ignores punctuation; when
it passes strings around it lumps them as part of a nearby word.  The first
gives zero because there are no "words" to lump it with.

From mystic@shadowlandz.esva.net  Tue Nov 12 22:26:29 1996
Subject: about the parser....
To: tim (Tim)
Date: Tue, 12 Nov 1996 22:31:08 -0500 (EST)

have another question about the parser..
was wondering why for: parse_add_rule( "foo", "STR" ) ..
> foo ?
do_foo_str( str ), str = 0

but,
> foo ? bar
do_foo_str( str ), str = "? bar"

would be nice, for "STR" rules, if the ? (in this example) were sent as
the parameter when by itself as well..



also, just curious about what your thoughts were on the parse_sentence and
parse_my_rules returning the value that the do_ callbacks do..  if you've
had any time/chance to think about it..


mark