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Discussed in: http://lists.gnu.org/archive/html/bison-patches/2009-01/msg00000.html http://lists.gnu.org/archive/html/bison-patches/2009-02/msg00002.html http://lists.gnu.org/archive/html/bison-patches/2009-03/msg00009.html * src/parse-gram.y: Add new syntax (named_ref.opt). * src/reader.c: Store named refs in symbol lists. * src/reader.h: New argument for symbol_append and action_append functions. * src/scan-code.h: Add new field (named_ref) into code_props data structure. Keeps named ref of midrule actions. * src/scan-code.l: Support for named refs in semantic action code. New function 'parse_named_ref'. * src/scan-gram.l: Support bracketed id. * src/symlist.c: Store named refs in symbol lists. * src/symlist.h: New field in symbol list: named_ref. * src/named-ref.h: New file, a struct for named_ref. * src/named-ref.cp: New file, named_ref_new function. * src/local.mk: Add two new files. * tests/testsuite.at: Include new test group: * tests/named-refs.at: this new file.