Revert "* re.c (rb_reg_initialize): don't set US-ASCII to regexp"

This reverts commit r30058.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30059 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/re.c b/re.c
index 090ae9c75f..41463eb199 100644
--- a/re.c
+++ b/re.c
@@ -2403,6 +2403,9 @@ rb_reg_initialize(VALUE obj, const char *s, long len, rb_encoding *enc,
 	    enc = fixed_enc;
 	}
     }
+    else if (!(options & ARG_ENCODING_FIXED)) {
+       enc = rb_usascii_encoding();
+    }
 
     rb_enc_associate((VALUE)re, enc);
     if ((options & ARG_ENCODING_FIXED) || fixed_enc) {