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wisent: Grammar Debugging

 
 2.4.1 Grammar debugging
 -----------------------
 
 To help writing a new grammar, ‘wisent-compile-grammar’ can produce a
 verbose report containing a detailed description of the grammar and
 parser (equivalent to what Bison reports with the ‘--verbose’ option).
 
    To enable the verbose report you can set to non-‘nil’ the variable:
 
  -- Option: wisent-verbose-flag
      non-‘nil’ means to report verbose information on generated parser.
 
    Or interactively use the command:
 
  -- Command: wisent-toggle-verbose-flag
      Toggle whether to report verbose information on generated parser.
 
    The verbose report is printed in the temporary buffer ‘*wisent-log*’
 when running interactively, or in file ‘wisent.output’ when running in
 batch mode.  Different reports are separated from each other by a line
 like this:
 
      *** Wisent SOURCE-FILE - 2002-06-27 17:33
 
    where SOURCE-FILE is the name of the Emacs Lisp file from which the
 grammar was read.  See Understanding the automaton, for details
 on the verbose report.
 
 *Please Note*
      To help debugging the grammar compiler itself, you can set this
      variable to print the content of some internal data structures:
 
       -- Variable: wisent-debug-flag
           non-‘nil’ means enable some debug stuff.
 

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