bug#7307: 24.0.50; Mode line had more than just dashes removed

[Stefan Monnier <monnier@IRO.UMontreal.CA>]

> Hm, this may be conceptually simpler but at least for me not simpler to
> implement, if I understand what you're suggesting, namely, that the
> filler character should be provided by a defcustom, which is defined in
> xdisp.c; is that right?  Before I try to do that, is the following
> consistent with what you're suggesting (aside from lack the
> configurability)?  If not, could you be more specific?

Yes, that's pretty much what I meant, except for the lack
of configurability.  To make it configurable, we'll need to build the
lots_of_<foo> string dynamically in all cases.  Maybe that can be done
by removing the test of field_width.


        Stefan