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diff --git a/ChangeLog b/ChangeLog
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+++ b/ChangeLog
@@ -1,3 +1,17 @@
+Thu Oct 22 15:30:08 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* compile.c (iseq_peephole_optimize): peephole optimization for
+	  branchnil jumps.
+
+	* compile.c (iseq_compile_each): generate save navigation operator
+	  code.
+
+	* insns.def (branchnil): new opcode to pop the tos and branch if
+	  it is nil.
+
+	* parse.y (NEW_QCALL, call_op, parser_yylex): parse token '.?'.
+	  [Feature #11537]
+
 Thu Oct 22 13:16:19 2015  Guilherme Reis Campos  <guilhermekbsa@gmail.com>
 
 	* dir.c (ruby_brace_expand): glob brace expansion edge case fix.