Hi,
posting forwarded herewith describes a design inconvenience, wich
affects common hide-show- and outline-modes too.
As too different solutions have been proposed, let me suggest
"setting read-only property" rather than "use of a modification hook".
Setting hidden text read-only should be more simple, straitforward - as
presumably hiding some code had some reasons.
Editing hidden code is an error, which should be signaled rather than
cured via hook.
Andreas
--
https://code.launchpad.net/~a-roehler/python-mode
https://code.launchpad.net/s-x-emacs-werkstatt/
Am 26.08.2010 00:28, schrieb Martin Pohlack:
Hi David,
On 25.08.2010 11:22, David Abrahams wrote:
I've gotten myself in trouble several times today by backspacing after
an org-link that ends a headline. That's a typical pattern for
editing an org-link, right? Well it turns out that if the item is
folded, then the backspace writes over the end of the un-folded item
but **appears to have no effect**, and you can easily hit backspace
several times to test your sanity before you realize that something is
wrong, badly corrupting your file.
I have had similar such accidents, but not involving links. You
probably backspaced into the "..."?
Seems to me that attempts to edit a folded item should either:
a) restrict changes to the item's headline, or
b) unfold the item and do nothing
Is there a way to set that up?
Just two quick ideas from me here:
* You could add a modification hook to all hidden areas to unfold them
on modification, or
* You could set the read-only property for all hidden areas. This could
be setup at the same location where hiding is done.
See also here:
http://www.gnu.org/software/emacs/elisp/html_node/Special-Properties.html#Special-Properties
I proposed a patch for image overlay which show a related problem here:
http://patchwork.newartisans.com/patch/31/
Cheers,
Martin
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