I get this warning in my matlab-shell
buffer when I print alot to stdout:
Warning (undo): Buffer `*MATLAB*' undo info was 12268000 bytes long.
The undo info was discarded because it exceeded `undo-outer-limit'.
This is normal if you executed a command that made a huge change
to the buffer. In that case, to prevent similar problems in the
future, set `undo-outer-limit' to a value that is large enough to
cover the maximum size of normal changes you expect a single
command to make, but not so large that it might exceed the
maximum memory allotted to Emacs.
My emacs looks like this:
I really don't need any undo in the matlab-shell
which is the right buffer. Is there a way to disable this warning? Note that the left buffer is a MATLAB
script which means that the major mode is MATLAB, and certainly undo should not be disabled there.
As that warning message says (or used to say?):
You can disable the popping up of this buffer by adding the entry
(undo discard-info)
to the user optionwarning-suppress-types
, which is defined in thewarnings
library.
That is:
(add-to-list 'warning-suppress-types '(undo discard-info))
(That will of course just disable the warning, not the undo data collection itself.)
Your question is a little ambiguous, but assuming you're saying that you have no need to undo things in this buffer, then you can disable the undo system on a per-buffer basis:
buffer-disable-undo is an interactive compiled Lisp function in `simple.el'.
(buffer-disable-undo &optional BUFFER)
Make BUFFER stop keeping undo information.
No argument or nil as argument means do this for the current buffer.
So you can call M-x buffer-disable-undo
RET interactively, or if you're sure about it, you could add this to a hook function for the mode in question.
Edit:
So based on the extra information in the question comments, I would suggest this:
(add-hook 'matlab-shell-mode-hook 'buffer-disable-undo)
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