* string.c (single_byte_optimizable): rb_enc_mbminlen must be 1

when rb_enc_mbmaxlen is 1.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15493 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

string.c

@@ -101,7 +101,7 @@ single_byte_optimizable(VALUE str)
 {
     rb_encoding *enc = STR_ENC_GET(str);
 
-    if (rb_enc_mbminlen(enc) == 1 && rb_enc_mbmaxlen(enc) == 1)
+    if (rb_enc_mbmaxlen(enc) == 1)
         return 1;
 
     /* Conservative.  It may be ENC_CODERANGE_UNKNOWN. */