Fossil

            }
          } else if( ((c & 0xff) == 0xed) && ((z[i+1] & 0xe0) == 0xa0) ){
            /* Unicode character in the range U+D800 - U+DFFF are for
             * surrogate pairs, they shouldn't occur in filenames. */
            return 0;
          }
        }
      }else if( c=='\\' ){
        return 0;
      }
    }
    if( c=='/' ){
      if( z[i+1]=='/' ) return 0;
      if( z[i+1]=='.' ){
        if( z[i+2]=='/' || z[i+2]==0 ) return 0;
        if( z[i+2]=='.' && (z[i+3]=='/' || z[i+3]==0) ) return 0;

    fossil_print("  file_isdir  = %d\n", file_wd_isdir(zName));
  }
}

/*
** Return TRUE if the given filename is canonical.
**
** Canonical names are full pathnames using "/" not "\" and which
** contain no "/./" or "/../" terms.
** Canonical names are full pathnames using "/" not "\" (on Windows)
** and which contain no "/./" or "/../" terms.
*/
int file_is_canonical(const char *z){
  int i;
  if( z[0]!='/'
#if defined(_WIN32)
    && (z[0]==0 || z[1]!=':' || z[2]!='/')
#endif
  ) return 0;

  for(i=0; z[i]; i++){
#if defined(_WIN32)
    if( z[i]=='\\' ) return 0;
#endif
    if( z[i]=='/' ){
      if( z[i+1]=='.' ){
        if( z[i+2]=='/' || z[i+2]==0 ) return 0;
        if( z[i+2]=='.' && (z[i+3]=='/' || z[i+3]==0) ) return 0;
      }
    }
  }