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1817b475a6
As an extension to POSIX Yacc, Bison's %type accepts tokens.
Unfortunately with string literals as implicit tokens, this is
misleading, and led some users to write
%type <exVal> cond "condition"
believing that "condition" would be associated to the 'cond'
nonterminal (see https://github.com/apache/httpd/pull/72).
* doc/bison.texi: Promote %nterm rather than %type to declare the type
of nonterminals.