bug#5438: 23.0.94; auto-fill-mode behaves strangely with periods near end of line

[Stefan Monnier]

> I am confused by how auto-fill deals with periods near the end of the
> line.  It seems that the determination of where to wrap is based not
> only on spaces, but also on periods.  That is, auto-fill seems to
> search for the final space before the last column, but if that space
> is preceded by a period, it looks back for the preceding space, and so
> on.  I notice this

I think you're seeing another feature of the system:
sentence-end-double-space.  It's usd among other things to prevent
wrapping the line right after "e.g." or "Mr." and things like that.


        Stefan