* Making a command undoable
@ 2012-08-31 17:16 Raffaele Ricciardi
2012-08-31 17:57 ` Doug Lewan
0 siblings, 1 reply; 2+ messages in thread
From: Raffaele Ricciardi @ 2012-08-31 17:16 UTC (permalink / raw)
To: help-gnu-emacs
Hello,
you have written a command and you want to make it undoable by using
`undo'. How do you accomplish that?
Thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
* RE: Making a command undoable
2012-08-31 17:16 Making a command undoable Raffaele Ricciardi
@ 2012-08-31 17:57 ` Doug Lewan
0 siblings, 0 replies; 2+ messages in thread
From: Doug Lewan @ 2012-08-31 17:57 UTC (permalink / raw)
To: Raffaele Ricciardi, help-gnu-emacs@gnu.org
The elisp info documentation (section 32.9 in emacs 24) tells you what kind of information you have to keep track of and how to do so.
I've also noticed that you very often get "undo" for free if your command make changes in "normal" ways. I assume that "the unit to undo" is a single M-x CMD, but I've never researched this.
,Doug
> -----Original Message-----
> From: help-gnu-emacs-bounces+dougl=shubertticketing.com@gnu.org
> [mailto:help-gnu-emacs-bounces+dougl=shubertticketing.com@gnu.org] On
> Behalf Of Raffaele Ricciardi
> Sent: Friday, 2012 August 31 13:17
> To: help-gnu-emacs@gnu.org
> Subject: Making a command undoable
>
> Hello,
>
> you have written a command and you want to make it undoable by using
> `undo'. How do you accomplish that?
>
> Thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2012-08-31 17:16 Making a command undoable Raffaele Ricciardi
2012-08-31 17:57 ` Doug Lewan
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