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Re: [Orgmode] Org-mode version 6.32trans and 6.21b; Strange interaction
From: |
Martin Pohlack |
Subject: |
Re: [Orgmode] Org-mode version 6.32trans and 6.21b; Strange interaction between whitespace-mode and cust. org-ellipsis |
Date: |
Mon, 14 Dec 2009 20:51:37 +0100 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.5) Gecko/20091212 Thunderbird/3.0 |
Hi Carsten,
On 14.12.2009 17:27, Carsten Dominik wrote:
> i can follow your arguments and would like to improve this.
>
> What I do not understand yet is this:
>
> I was under the impression that normally, there is only a single
> display table in Emacs, and that is the global one and every buffer
> will use it.
Interesting, I had the opposite impression. I'm not exactly sure why
though. Maybe from the documentation and name of the variable
buffer-display-table?
Maybe you had standard-display-table in mind?
"Variable: Display table to use for buffers that specify none.
See `buffer-display-table' for more information."
I have, however, never seen a spelled out convention regarding deep
sharing of display tables.
> So it would seem to me that whitespace-mode would normally
> *make* a local table in order to put its changes in there. However,
> that does not seem to be the case here. Can you see why?
I think whitespace-mode usually assumes that the local display tables
is, well, local. Therefore, no action would be required.
I forwarded my original bug-report to Vinicius Jose Latorre
(whitespace-mode's maintainer) after you mentioned it would be a
whitespace-mode bug.
He replied:
> Well, the problem was due to the way whitespace deal with
> buffer-display-table variable.
>
> I've just fixed this problem in Emacs CVS and EmacsWiki.
Here is the patch:
http://lists.gnu.org/archive/html/emacs-diffs/2009-12/msg00184.html
He basically creates a deep copy (the copy-sequence line) of the local
display table and installs it. This should solve the problem.
I still have this nagging feeling that the sharing of the display table
is not the right thing to do and would regard the fix in whitespace-mode
as a kind of emergence case backup. But this is probably purely a style
thing.
Thanks for getting back to me on this matter,
Martin