> xg_wm_set_size_hint scale 2 char width 18 vscroll 32 fringes 16 borders 0 base width 33 width inc 9
 >     char height 36 menubar 50 toolbar 82 hscroll 0 borders 0 base height 84 height inc 18
 > xg_frame_set_char_size old native pixels 1488x1296 new native pixels 1491x1296 outer pixels 745x714 outer rest 1x0

Apparently, rounding the native pixels doesn't make sense.  Let's round
just the outer pixels instead.  Patch attached.

martin