Toggleable underline/overline switch added.

bar.c

@@ -104,7 +104,7 @@ draw_char (int x, int align, wchar_t ch)
 
     /* Draw the underline */
     if (BAR_UNDERLINE_HEIGHT) 
-        xcb_fill_rect (underl_gc, x, BAR_HEIGHT-BAR_UNDERLINE_HEIGHT, ch_width, BAR_UNDERLINE_HEIGHT);
+        xcb_fill_rect (underl_gc, x, BAR_UNDERLINE*(BAR_HEIGHT-BAR_UNDERLINE_HEIGHT), ch_width, BAR_UNDERLINE_HEIGHT);
 
     /* xcb accepts string in UCS-2 BE, so swap */
     ch = (ch >> 8) | (ch << 8);