[Bug c++/49973] Column numbers count special characters as multiple columns

[timothy003 at msn dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49973

--- Comment #4 from Timothy Liang <timothy003 at msn dot com> 2011-08-04 11:03:32 UTC ---
(In reply to comment #3)
> Why 10? "    /* 中 */ " has 12 characters (and 14 bytes as utf8).

The four spaces is supposed to be a tab.  Also, the column number starts from
one.  So:

 /* 中 */ asdf
         |
1234567890

Since I set the input charset as UTF-8, g++ should count the '中' as one
character, not three.  And when I set it to latin1, g++ should count the '中' as
three, not six.