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There is now a pseudo variable @$ (readble and writable), location of the lhs of the rule (by default ranging from the location of the first symbol of the rhs, to the location of the last symbol, or, if the rhs is empty, YYLLOC). * src/bison.s1 [YYLSP_NEEDED] (yyloc): New variable, twin of yyval. (yyparse): When providing a default semantic action, provide a default location action. (after the $): No longer change `*YYLSP', just stack YYLOC the same way you stack YYVAL. * src/reader.c (read_declarations): Use warns. (copy_guard, case '@'): Also recognize `@$', expanded as `YYLOC'. (copy_action, case '@'): Likewise. Use a standard error message, to save useless work from translators.
This directory contains the Bison parser generator. See the file INSTALL for compilation and installation instructions. See the file doc/FAQ for frequently asked questions. It was once true that, when installing Bison on Sequent (or Pyramid?) systems, you had to be in the Berkeley universe. This may no longer be true; we have no way to tell. On VMS, you will probably have to create Makefile from Makefile.in by hand. Remember to do `SET COMMAND BISON' to install the data in `BISON.CLD'. VMS and MS-DOS builds are probably broken right now. If you are able to build Bison on either platform and you need to make changes to do so, please submit those changes as a bug report. Send bug reports to bug-bison@gnu.org. Please include the version number from `bison --version', and a complete, self-contained test case in each bug report. If you have questions about using Bison which the documentation does not answer, send mail to help-bison@gnu.org.