On Fri, 5 Feb 2010, Csaba Raduly wrote:

> The C code generated from the following grammar will not compile,
> because yytoknum is not defined when glr-parser is in use.

You should have better luck with %printer, which is the modern version of 
YYPRINT.  Actually, our %printer documentation is poor.  It has the same 
syntax as %destructor.  You print to yyoutput, which is a FILE*.  For 
example:

  %printer { fprintf (yyoutput, "%d", $$); } BOOL <integer>

It's not clear to me whether we should add YYPRINT support to GLR or if we 
should just document the lack of support.


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