bug#14170: 24.3; linum won't create all overlays after a folding

[Stefan Monnier]

>> > nlinum works correctly.
>> This is the answer to most recent bug reports involving linum, as I
>> recall. Will nlinum replace linum at some point?
> Btw, if nlinum is our response to the problems in linum, then nlinum
> should be a bit more friendly to bidirectional text, and determine
> whether to put numbers on the left or right margin by looking at what
> current-bidi-paragraph-direction returns.  (Yes, this means that if
> some paragraphs are L2R and others R2L, some numbers will be on the
> left, while others on the right.)

Patches welcome, but I don't think we need to worry a bout this w.r.t
moving from linum.el to nlinum.el since linum.el doesn't support R2L
paragraphs either.


        Stefan