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qualifiers in %code directives, and restrict the characters that are allowed in them to M4-friendly ones. For %define, continue to support the quoted form as a deprecated feature. Discussed starting at <http://lists.gnu.org/archive/html/bison-patches/2007-01/msg00023.html>. * NEWS (2.3a+): Add entry for the change to %define. Update entry for %code. * doc/bison.texinfo (Prologue Alternatives): Update. (Bison Declaration Summary): In %defines entry, update mention of `%code requires' and `%code provides'. (C++ Location Values): Update %define uses. (Calc++ Parser Interface): Likewise. (Calc++ Parser): Likewise, and update `%code requires' uses. (Bison Symbols): Update %code documentation. * src/parse-gram.y (prologue_declaration): For %define variables, use `variable' instead of `STRING'. (grammar_declaration): For %code qualifiers, use `ID' instead of `STRING'. (variable): New nonterminal that takes an `ID' or a `STRING'. * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Update %code and %define uses. * tests/calc.at (_AT_DATA_CALC_Y): Update %define use. * tests/input.at (Reject unused %code qualifiers): Update %code uses. (%define errors): Update %define uses.