bug#11653: 23.2; Segfault with csv-mode

[Eli Zaretskii <eliz@gnu.org>]

> Date: Wed, 13 Jun 2012 12:12:33 -0400
> From: Jordi Gutiérrez Hermoso <jordigh@octave.org>
> Cc: 11653@debbugs.gnu.org
> 
> >>       overlay_string_index = 1935,   <<<<<<<<<<<<<<<<<<<<<<<
> >>       string_pos = {
> >>         charpos = 0,
> >>         bytepos = 0
> >
> > Are there this many overlay strings in the buffer at character
> > position 1?  If not, this huge number is probably garbage, and is the
> > cause for the segfault.
> 
> I don't understand Emacs internals. What's an overlay string, and how
> do I count it?

It's an overlay with a before-string or an after-string property.  You
should be able to see that with "M-x describe-text-properties RET", I
think, as well as in the code of the mode you are using.

> > Btw, when I tried your recipe, Emacs asked me about the column to sort
> > by, which was not in your recipe.  Can you double-check if your recipe
> > is 100% correct and does not omit any important details?
> 
> I thought the <RET> handled it for me, because the function
> csv-sort-fields queries you for a value. Yes, the default of 1 is
> what's necessary.

OK, I will try the recipe again when I have time.