> From: Robert Dodier <robert.dodier at gmail.com>
> Date: Wed, 27 Nov 2013 19:34:08 +0000
>
> On 2013-11-27, Leo Butler <l_butler at users.sourceforge.net> wrote:
>
> > Is there a way to inspect the state of the parser that I am missing?
> > Specifically, I would like to have access to the string of characters
> > that constitute a line of input.
>
> Well, __ (i.e. two underbars) is the input expression currently being
> evaluated, and _ (one underbar) is the previous input expression.
> Dunno if that helps.
No. These contain input expressions after the parser and reader have
processed them. I want to intercept characters as the parser reads
them. And, ideally, I would like to monitor the parser's state as it
parses.
Leo