Akim Demaille 8637438cee yacc.c: isolate yyexpected_tokens ...

Provide users with a means to query for the currently allowed tokens.
Could be used for autocompletion for instance.

* data/skeletons/yacc.c (yyexpected_tokens): New, extracted from
yysyntax_error_arguments.
* examples/c/calc/calc.y (PRINT_EXPECTED_TOKENS): New.
Use it.

2020-01-17 06:49:59 +01:00

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