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Re: Universal functions to manage multiple window caches.


From: Alex Gramiak
Subject: Re: Universal functions to manage multiple window caches.
Date: Fri, 19 Apr 2019 07:59:09 -0600
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux)

Keith David Bershatsky <address@hidden> writes:

> I created a minimal working example based upon my interpretation of how to 
> use your sample struct.  Was it your intention that each main cache would be 
> defined as follows (and the MWE being nth 0 below):
>
> 1.  TEMP flavor:  w->mc_elts[0]
>
> 2.  MC flavor:  w->mc_elts[1]
>
> 3.  CH flavor:  w->mc_elts[2]
>
> 4.  FC flavor:  w->mc_elts[3]

No, my intention was for each flavor to be a different element in the
window struct. It's fine either way, but different elements could have
more descriptive names than an index allows.

> if (BUFFERP (w->contents)
>     && !NILP (BVAR (XBUFFER (w->contents), crosshairs)))
>   {
>     /* Increase the size of the array. */
>     if (w->mc_elts_allocated == 0)
>       {
>         ++w->mc_nelts;
>         int old_alloc = w->mc_elts_allocated;
>         int new_elts = w->mc_nelts - w->mc_elts_allocated;
>         w->mc_elts = xpalloc (w->mc_elts, &w->mc_elts_allocated,
>                                 new_elts, INT_MAX, sizeof *w->mc_elts);
>         memset (w->mc_elts + old_alloc, 0,
>                  (w->mc_elts_allocated - old_alloc) * sizeof *w->mc_elts);
>       }

Did you forget to update this part?



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