add: lastcol = x2;
context: void latex_attach_hsep ( int x, int x2, int y, int y2){/*   if ( y > lastline ) *//*     {       */      if ( ! last_is_hsep )	fprintf ( out, "\\\\\n" );      lastline = y2;/*     } */  fprintf ( out, "\\hline\n" );  last_is_hsep = 1;}