* re.c (rb_reg_expr_str): fix broken Regexp#inspect when it

is ASCII-8BIT and non-ASCII character.
  The length of character should be from original byte string.
  [ruby-core:31431]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28715 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Thu Jul 22 16:27:41 2010  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* re.c (rb_reg_expr_str): fix broken Regexp#inspect when it
+	  is ASCII-8BIT and non-ASCII character.
+	  The length of character should be from original byte string.
+	  [ruby-core:31431]
+
 Thu Jul 22 14:30:17 2010  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* include/ruby/missing.h: add prototype for ruby_close().

re.c

@@ -373,7 +373,8 @@ rb_reg_expr_str(VALUE str, const char *s, long len,
                 int l;
 		if (resenc) {
 		    unsigned int c = rb_enc_mbc_to_codepoint(p, pend, enc);
-		    l = rb_str_buf_cat_escaped_char(str, c, unicode_p);
+		    l = rb_enc_codelen(c, enc);
+		    rb_str_buf_cat_escaped_char(str, c, unicode_p);
 		}
 		else {
 		    l = mbclen(p, pend, enc);

test/ruby/test_regexp.rb

@@ -155,8 +155,8 @@ class TestRegexp < Test::Unit::TestCase
     assert_equal('/\/x/i', /\/x/i.inspect)
     assert_equal('/\x00/i', /#{"\0"}/i.inspect)
     assert_equal("/\n/i", /#{"\n"}/i.inspect)
-    s = [0xff].pack("C")
-    assert_equal('/\/\xFF/i', /\/#{s}/i.inspect)
+    s = [0xf1, 0xf2, 0xf3].pack("C*")
+    assert_equal('/\/\xF1\xF2\xF3/i', /\/#{s}/i.inspect)
   end
 
   def test_char_to_option