Akim Demaille 7122d747cf yacc.c: no longer support YYERROR_VERBOSE ...

Supporting YYERROR_VERBOSE via cpp is a nuisance: m4 is in charge of
handling alternatives.  When adding more options for %define
parse.error, supporting both CPP and M4 is too complex.  Anyway,
YYERROR_VERBOSE was deprecated long ago.

* data/skeletons/yacc.c: Use m4 only to handle verbose/simple error
messages.

2020-01-04 09:12:43 +01:00

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