* parse.y (parser_str_new, rb_intern3): ascii only string literal is US-ASCII.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15195 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -2,6 +2,9 @@ Thu Jan 24 01:00:34 2008  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* encoding.{c, h} (rb_usascii_encoding): added.
 
+	* parse.y (parser_str_new, rb_intern3): ascii only string literal is
+	  US-ASCII.
+
 Wed Jan 23 23:54:40 2008  Yusuke Endoh  <mame@tsg.ne.jp>
 
 	* sprintf.c: fix comment.  [ruby-dev:33275]

parse.y

@@ -4845,7 +4845,7 @@ parser_str_new(const char *p, long n, rb_encoding *enc, int func)
     if (!(func & STR_FUNC_REGEXP) &&
         rb_enc_asciicompat(enc) &&
         rb_enc_str_coderange(str) == ENC_CODERANGE_7BIT) {
-        rb_enc_associate(str, rb_ascii8bit_encoding());
+        rb_enc_associate(str, rb_usascii_encoding());
     }
 
     return str;
@@ -8976,7 +8976,7 @@ rb_intern3(const char *name, long len, rb_encoding *enc)
 	}
     }
     if (m - name < len) id = ID_JUNK;
-    if (enc != rb_ascii8bit_encoding()) {
+    if (enc != rb_usascii_encoding()) {
 	/*
 	 * this clause makes sense only when called from other than
 	 * rb_intern_str() taking care of code-range.
@@ -8985,7 +8985,7 @@ rb_intern3(const char *name, long len, rb_encoding *enc)
 	    for (; m <= name + len; ++m) {
 		if (!ISASCII(*m)) goto mbstr;
 	    }
-	    enc = rb_ascii8bit_encoding();
+	    enc = rb_usascii_encoding();
 	}
       mbstr:;
     }