naruse	2011-12-09 15:01:41 +0900 (Fri, 09 Dec 2011)

  New Revision: 33991

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=33991

  Log:
    * file.c (file_path_convert): don't convert it when the path string is
      ascii only. [ruby-core:41556] [Bug #5733]
      tests are contributed by nobu.

  Modified files:
    trunk/ChangeLog
    trunk/file.c
    trunk/test/ruby/test_econv.rb

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 33990)
+++ ChangeLog	(revision 33991)
@@ -1,3 +1,9 @@
+Fri Dec  9 14:28:40 2011  NARUSE, Yui  <naruse@r...>
+
+	* file.c (file_path_convert): don't convert it when the path string is
+	  ascii only. [ruby-core:41556] [Bug #5733]
+	  tests are contributed by nobu.
+
 Fri Dec  9 08:00:15 2011  Luis Lavena  <luislavena@g...>
 
 	* include/ruby/win32.h: undef stat to silence mingw-w64 stat
Index: test/ruby/test_econv.rb
===================================================================
--- test/ruby/test_econv.rb	(revision 33990)
+++ test/ruby/test_econv.rb	(revision 33991)
@@ -1,4 +1,5 @@
 require 'test/unit'
+require 'envutil'
 
 class TestEncodingConverter < Test::Unit::TestCase
   def check_ec(edst, esrc, eres, dst, src, ec, off, len, opts=nil)
@@ -908,4 +909,23 @@
     ec2 = Encoding::Converter.new("", "", newline: :universal)
     assert_equal(ec1, ec2)
   end
+
+  def test_default_external
+    cmd = <<EOS
+    Encoding.default_external = ext = ARGV[0]
+    Encoding.default_internal = int ='utf-8'
+    begin
+      Encoding::Converter.new(ext, int)
+    ensure
+      Marshal.dump($!, STDOUT)
+      STDOUT.flush
+    end
+EOS
+    Encoding.list.grep(->(enc) {/^ISO-8859-\d(?:[0-5])?\z/i =~ enc.name}) do |enc|
+      error = IO.popen([EnvUtil.rubybin, "-e", cmd, enc.name]) do |child|
+        Marshal.load(child)
+      end
+      assert_nil(error)
+    end
+  end
 end
Index: file.c
===================================================================
--- file.c	(revision 33990)
+++ file.c	(revision 33991)
@@ -136,8 +136,10 @@
     if (rb_default_internal_encoding() != NULL
 	    && rb_usascii_encoding() != fname_encoding
 	    && rb_ascii8bit_encoding() != fname_encoding
-	    && (fs_encoding = rb_filesystem_encoding()) != fname_encoding) {
+	    && (fs_encoding = rb_filesystem_encoding()) != fname_encoding
+	    && !rb_enc_str_asciionly_p(name)) {
 	/* Don't call rb_filesystem_encoding() before US-ASCII and ASCII-8BIT */
+	/* fs_encoding should be ascii compatible */
 	name = rb_str_conv_enc(name, fname_encoding, fs_encoding);
     }
 #endif

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