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

[Eli Zaretskii]

> From: Glenn Morris <rgm@gnu.org>
> Date: Tue, 09 Apr 2013 21:51:59 -0400
> 
> E Sabof wrote:
> 
> > 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.)