merge revision(s) 51116: [Backport ruby#11324]

	* transcode.c (rb_econv_set_replacement): target encoding name can
	  be empty now.  [ruby-core:69841] [Bug ruby#11324]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@51614 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Author: unak

ChangeLog

@@ -1,3 +1,8 @@
+Mon Aug 17 17:54:33 2015  Nobuyoshi Nakada  <[email protected]>
+
+	* transcode.c (rb_econv_set_replacement): target encoding name can
+	  be empty now.  [ruby-core:69841] [Bug #11324]
+
 Mon Aug 17 17:52:11 2015  Nobuyoshi Nakada  <[email protected]>
 
 	* hash.c (rb_any_hash): fix Float hash.  rb_dbl_hash() returns a

test/ruby/test_transcode.rb

@@ -2109,4 +2109,13 @@ def test_loading_race
       assert_equal([expected]*num, result, bug11277)
     end;
   end
+
+  def test_universal_newline
+    bug11324 = '[ruby-core:69841] [Bug #11324]'
+    usascii = Encoding::US_ASCII
+    s = "A\nB\r\nC".force_encoding(usascii)
+    assert_equal("A\nB\nC", s.encode(usascii, universal_newline: true), bug11324)
+    assert_equal("A\nB\nC", s.encode(usascii, universal_newline: true, undef: :replace), bug11324)
+    assert_equal("A\nB\nC", s.encode(usascii, universal_newline: true, undef: :replace, replace: ''), bug11324)
+  end
 end

transcode.c

@@ -2201,7 +2201,7 @@ rb_econv_set_replacement(rb_econv_t *ec,
 
     encname2 = rb_econv_encoding_to_insert_output(ec);
 
-    if (encoding_equal(encname, encname2)) {
+    if (!*encname2 || encoding_equal(encname, encname2)) {
         str2 = xmalloc(len);
         MEMCPY(str2, str, unsigned char, len); /* xxx: str may be invalid */
         len2 = len;

version.h

@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.1.7"
 #define RUBY_RELEASE_DATE "2015-08-17"
-#define RUBY_PATCHLEVEL 396
+#define RUBY_PATCHLEVEL 397
 
 #define RUBY_RELEASE_YEAR 2015
 #define RUBY_RELEASE_MONTH 8