[fpc-pascal] fpc-passrc expression parser (issue #16914)

[Marco van de Voort]

In our previous episode, Paul Nicholls said:
> >
> > Michael.
> 
> Hi all,
>   I am interested in expression parsers myself :)
> 
> Where can I find the code for "fpexprpars.pp" and other fpc parsing code 
> like that?
> 
> I had bit of a look browsing the SVN online, but no luck...

That one is in packages/fcl-base, and another is in packages/symbolic