undo: changes outside of visible portion of buffer

undo: changes outside of visible portion of buffer

[Eric Abrahamsen]

I'm trying to undo a fairly large chunk of text deletion, and emacs is
telling me:

undo-more: Changes to be undone are outside visible portion of buffer

I get this no matter where I scroll in the buffer -- it's only about
three screenfuls. I had undo-tree-mode active when I did the deletion,
but I get the same error whether it's active or no.

I'd like this text back, and I don't care if it's not visible! I can't
find any switches that might allow me to circumvent the error -- what
options do I have here?

emacs-version: "24.3.1"

Thanks,
Eric

Re: undo: changes outside of visible portion of buffer

[Eli Zaretskii]

> From: Eric Abrahamsen <eric@ericabrahamsen.net>
> Date: Sat, 19 Apr 2014 16:07:26 +0800
> 
> I'm trying to undo a fairly large chunk of text deletion, and emacs is
> telling me:
> 
> undo-more: Changes to be undone are outside visible portion of buffer
> 
> I get this no matter where I scroll in the buffer -- it's only about
> three screenfuls. I had undo-tree-mode active when I did the deletion,
> but I get the same error whether it's active or no.
> 
> I'd like this text back, and I don't care if it's not visible! I can't
> find any switches that might allow me to circumvent the error -- what
> options do I have here?

I think "visible" here means the narrowed region, not visible on
display.  Do you have any kind of narrowing in that buffer?  If so,
try "M-x widen RET".

Re: undo: changes outside of visible portion of buffer

[Eric Abrahamsen]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Eric Abrahamsen <eric@ericabrahamsen.net>
>> Date: Sat, 19 Apr 2014 16:07:26 +0800
>> 
>> I'm trying to undo a fairly large chunk of text deletion, and emacs is
>> telling me:
>> 
>> undo-more: Changes to be undone are outside visible portion of buffer
>> 
>> I get this no matter where I scroll in the buffer -- it's only about
>> three screenfuls. I had undo-tree-mode active when I did the deletion,
>> but I get the same error whether it's active or no.
>> 
>> I'd like this text back, and I don't care if it's not visible! I can't
>> find any switches that might allow me to circumvent the error -- what
>> options do I have here?
>
> I think "visible" here means the narrowed region, not visible on
> display.  Do you have any kind of narrowing in that buffer?  If so,
> try "M-x widen RET".

After I sent the message I had the same idea, and tried "widen", but it
didn't do anything. It was an emacs-lisp buffer, other minor modes in
effect were Magit auto revert, Paredit, ElDoc, Auto Complete, and Undo
Tree. I don't ever use narrowing manually, and I don't think any of
those minor modes would have done it automatically, so I don't know what
was going on. I think you must be right, though, that the error was
referring to narrowing.

After looking at the undo code, I did eventually get the text back (or
most of it) from pending-undo-list, though.

Hmm, I couldn't retrieve the five or six most recent lines -- I wonder
if I accidentally narrowed something before I typed those...

E

Re: undo: changes outside of visible portion of buffer

[Eli Zaretskii]

> From: Eric Abrahamsen <eric@ericabrahamsen.net>
> Date: Sat, 19 Apr 2014 16:56:39 +0800
> 
> > I think "visible" here means the narrowed region, not visible on
> > display.  Do you have any kind of narrowing in that buffer?  If so,
> > try "M-x widen RET".
> 
> After I sent the message I had the same idea, and tried "widen", but it
> didn't do anything. It was an emacs-lisp buffer, other minor modes in
> effect were Magit auto revert, Paredit, ElDoc, Auto Complete, and Undo
> Tree. I don't ever use narrowing manually, and I don't think any of
> those minor modes would have done it automatically, so I don't know what
> was going on. I think you must be right, though, that the error was
> referring to narrowing.

Maybe you should look into those modes and see if they don't impose
narrowing behind your back.

Re: undo: changes outside of visible portion of buffer

[Eric Abrahamsen]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Eric Abrahamsen <eric@ericabrahamsen.net>
>> Date: Sat, 19 Apr 2014 16:56:39 +0800
>> 
>> > I think "visible" here means the narrowed region, not visible on
>> > display.  Do you have any kind of narrowing in that buffer?  If so,
>> > try "M-x widen RET".
>> 
>> After I sent the message I had the same idea, and tried "widen", but it
>> didn't do anything. It was an emacs-lisp buffer, other minor modes in
>> effect were Magit auto revert, Paredit, ElDoc, Auto Complete, and Undo
>> Tree. I don't ever use narrowing manually, and I don't think any of
>> those minor modes would have done it automatically, so I don't know what
>> was going on. I think you must be right, though, that the error was
>> referring to narrowing.
>
> Maybe you should look into those modes and see if they don't impose
> narrowing behind your back.

I'll take a look, thanks.