Copyright (C) 2016 Matthew R. Wette

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BUG-005	<= next bug id

BUG-004	Idea: use guile prompts to implement rollback parser

BUG-003	If using phony prec token then it ends up in match table.
	For example, "then" appears in the match table for lang/c99.

=fixed=	

BUG-001	In lalr.scm, hashify-machine, if pat contains a rrconf then the output
	is unspecified
   todo	I think this was already fixed

BUG-002	If mach has a conflict and hashify followed by pp-lalr-machine then
	error because hashify puts #f, not integer, for pat-v.
  fixed	fixed pp-lalr-machine to check for #f

