knu	2010-01-01 00:36:22 +0900 (Fri, 01 Jan 2010)

  New Revision: 26221

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=26221

  Log:
    * parse.y (dsym): Allow empty symbols. [merge from 1.9]

  Modified files:
    branches/ruby_1_8/ChangeLog
    branches/ruby_1_8/NEWS
    branches/ruby_1_8/parse.y

Index: ruby_1_8/parse.y
===================================================================
--- ruby_1_8/parse.y	(revision 26220)
+++ ruby_1_8/parse.y	(revision 26221)
@@ -2282,8 +2282,7 @@
 		    {
 		        lex_state = EXPR_END;
 			if (!($$ = $2)) {
-			    $$ = NEW_NIL();
-			    yyerror("empty symbol literal");
+			    $$ = NEW_LIT(ID2SYM(rb_intern("")));
 			}
 			else {
 			    VALUE lit;
@@ -2294,10 +2293,6 @@
 				break;
 			      case NODE_STR:
 				lit = $$->nd_lit;
-				if (RSTRING(lit)->len == 0) {
-				    yyerror("empty symbol literal");
-				    break;
-				}
 				if (strlen(RSTRING(lit)->ptr) == RSTRING(lit)->len) {
 				    $$->nd_lit = ID2SYM(rb_intern(RSTRING($$->nd_lit)->ptr));
 				    nd_set_type($$, NODE_LIT);
Index: ruby_1_8/NEWS
===================================================================
--- ruby_1_8/NEWS	(revision 26220)
+++ ruby_1_8/NEWS	(revision 26221)
@@ -11,6 +11,10 @@
 
 === Lexical changes
 
+* empty symbol literal
+
+  Empty symbol (:"") is allowed.
+
 * looser splat opetator
 
   You can write things like:
Index: ruby_1_8/ChangeLog
===================================================================
--- ruby_1_8/ChangeLog	(revision 26220)
+++ ruby_1_8/ChangeLog	(revision 26221)
@@ -1,3 +1,7 @@
+Fri Jan  1 00:33:13 2010  Akinori MUSHA  <knu@i...>
+
+	* parse.y (dsym): Allow empty symbols. [merge from 1.9]
+
 Fri Jan  1 00:12:52 2010  Akinori MUSHA  <knu@i...>
 
 	* object.c, intern.h: Export rb_sym_to_s.

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