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+Mon Sep  2 16:06:00 2013  Charlie Somerville  <charliesome@ruby-lang.org>
+
+	* NEWS: Add note about frozen string literals
+
+	* compile.c (case_when_optimizable_literal): optimize NODE_LIT strings
+	  in when clauses of case statements
+
+	* ext/ripper/eventids2.c: add tSTRING_SUFFIX
+
+	* parse.y: add 'f' suffix on string literals for frozen strings
+
+	* test/ripper/test_scanner_events.rb: add scanner tests
+
+	* test/ruby/test_string.rb: add frozen string tests
+
+	[Feature #8579] [ruby-core:55699]
+
 Mon Sep  2 14:39:29 2013  Akinori MUSHA  <knu@iDaemons.org>
 
 	* ruby.c (Process#setproctitle): [DOC] Fix and improve rdoc.