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doc: use %empty instead of /* empty */

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* doc/bison.texi: Change the comments into explicit %empty.
This commit is contained in:
Akim Demaille
2013-02-16 13:49:04 +01:00
parent 09add9c24f
commit 6240346aa0
2 changed files with 33 additions and 30 deletions
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4
NEWS
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@@ -364,6 +364,8 @@ GNU Bison NEWS
** Empty rules
With help from Joel E. Denny and Gabriel Rassoul.
Empty rules (i.e., with an empty right-hand side) can now be explicitly
marked by the new %empty directive. Using %empty on a non-empty rule is
an error. The new -Wempty-rule warning reports empty rules without
@@ -432,7 +434,7 @@ GNU Bison NEWS
;
list:
/* nothing */ { /* Generates an empty string list */ }
%empty { /* Generates an empty string list. */ }
| list item ";" { std::swap ($$, $1); $$.push_back ($2); }
;