* include/ruby/encoding.h (rb_enc_asciicompat): dummy encoding is not

ascii compatible. [ruby-dev:33878]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15559 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Thu Feb 21 10:35:04 2008  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* include/ruby/encoding.h (rb_enc_asciicompat): dummy encoding is not
+	  ascii compatible. [ruby-dev:33878]
+
 Thu Feb 21 00:01:34 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* configure.in (RPATHFLAG): -R option of HP-UX ld is not for runtime

include/ruby/encoding.h

@@ -154,7 +154,7 @@ int rb_enc_codelen(int code, rb_encoding *enc);
 #define rb_enc_isspace(c,enc) ONIGENC_IS_CODE_SPACE(enc,c)
 #define rb_enc_isdigit(c,enc) ONIGENC_IS_CODE_DIGIT(enc,c)
 
-#define rb_enc_asciicompat(enc) (rb_enc_mbminlen(enc)==1)
+#define rb_enc_asciicompat(enc) (!rb_enc_dummy_p(enc) && rb_enc_mbminlen(enc)==1)
 
 int rb_enc_casefold(char *to, const char *p, const char *e, rb_encoding *enc);
 int rb_enc_toupper(int c, rb_encoding *enc);