Re: [bug] [babel] babel corrupts undo history

[Eric Schulte <schulte.eric@gmail.com>]

I don't understand.  Is the problem that edits made in the indirect
buffer are not spliced into the undo history of the Org-mode buffer?

Samuel Wales <samologist@gmail.com> writes:

> c-c ' c-c ' on this.  then undo or undo-tree-undo.
>
> what happens is data corruption.  to me, undo is a low-level
> operation that should always work, even with a syntactically
> invalid block.
>
> a relevant variable is org-src-preserve-indentation.  it is
> possible to change it without changing a block.
>
> ===
>
> #+BEGIN_SRC sh :noweb yes :results verbatim output
>   (
>       cat <<EOF
> test
> EOF
>   ) 2>&1
>   :
> #+END_SRC
>
> ===
>
> Emacs 24.2, recent Org, recent undo-tree-mode.
>
> Thanks.
>
> Samuel
>
> P.S.  You might be wondering why I use a subshell and a
> redirection followed by a null command.  This is because I
> prefer to bypass Babel's error mechanism, which I find
> confusing.  Doing exactly as above is the only way I know to
> get Babel to work the way I prefer (although {} might or
> might not work also).  I always do this for every block.  IMO it would
> be great for newcomers if there were options in Babel sh blocks for
> exactly this.

-- 
Eric Schulte
https://cs.unm.edu/~eschulte
PGP: 0x614CA05D