* elisp question - hungry backspaces
@ 2008-05-23 18:41 Clemenceau
2008-05-24 4:11 ` David Hansen
0 siblings, 1 reply; 2+ messages in thread
From: Clemenceau @ 2008-05-23 18:41 UTC (permalink / raw)
To: Help-gnu-emacs
Hello,
I'm writing an emacs major mode, and want to implement a hungry-delete
feature, much like the one c++-mode has. I've written the handler function,
which tells if the previous character is a space/tab or a real character,
and acts accordingly.
However...
I'm having problems with deleting a marked region. I'm using
pc-selection-mode, and want the function to give priority to deleting a
region if one has been marked, before doing a hungry or 1-character
deletion.
I've tried teaching my function to go to the start of the region and delete
it, which actually worked, but then any following backspace when a region
wasnt marked acted strangely - as if the first region was still marked.
It seems my problem is with telling whether or not the region is active.
Unless of course I don't understand my problem - in which case I'd also be
glad to be enlightened.
Any help would be greatly appreciated.
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* Re: elisp question - hungry backspaces
2008-05-23 18:41 elisp question - hungry backspaces Clemenceau
@ 2008-05-24 4:11 ` David Hansen
0 siblings, 0 replies; 2+ messages in thread
From: David Hansen @ 2008-05-24 4:11 UTC (permalink / raw)
To: help-gnu-emacs
On Fri, 23 May 2008 11:41:50 -0700 (PDT) Clemenceau wrote:
> I'm writing an emacs major mode, and want to implement a hungry-delete
> feature, much like the one c++-mode has. I've written the handler function,
> which tells if the previous character is a space/tab or a real character,
> and acts accordingly.
>
> However...
> I'm having problems with deleting a marked region. I'm using
> pc-selection-mode, and want the function to give priority to deleting a
> region if one has been marked, before doing a hungry or 1-character
> deletion.
Why do you want to overwrite emacs standard behavior in the first place?
There already is:
`backward-delete-char-untabify-method'
`delete-selection-mode'
David
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