Comment 6 for bug 134902

> (Interesting that -fw doesn't seem to reproduce it. Of course it's still a bug that -fn crashes ...)

font_width (which is erroneously zero) is set like this:

    inst->font_width = gdk_char_width(inst->fonts[0], ' ');

so it's only -fn that affects it. (-fw sets fonts[1].)

Perhaps these fonts don't include the space character?