* parse.y (reg_fragment_setenc_gen): recognize regexp with option n as

	  as ASCII-8BIT instead of US-ASCII. [ruby-dev:33339]



git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@15209 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 0 deletions

diff --git a/parse.y b/parse.y
index aabcc5c18..d6434d78c 100644
--- a/parse.y
+++ b/parse.y
@@ -456,6 +456,7 @@ static int lvar_defined_gen(struct parser_params*, ID);
 #define RE_OPTION_ENCODING_SHIFT 8
 #define RE_OPTION_ENCODING(e) (((e)&0xff)<<RE_OPTION_ENCODING_SHIFT)
 #define RE_OPTION_ENCODING_IDX(o) (((o)>>RE_OPTION_ENCODING_SHIFT)&0xff)
+#define RE_OPTION_ENCODING_NONE(o) ((o)&32)
 #define RE_OPTION_MASK  0xff
 
 #define NODE_STRTERM NODE_ZARRAY	/* nothing to gc */
@@ -8478,6 +8479,9 @@ reg_fragment_setenc_gen(struct parser_params* parser, VALUE str, int options)
 	}
 	ENCODING_SET(str, idx);
     }
+    else if (RE_OPTION_ENCODING_NONE(options)) {
+	rb_enc_associate(str, rb_ascii8bit_encoding());
+    }
 }
 
 static void