Carsten Dominik <carsten.dominik@gmail.com> writes:

> Hi Dan,
>
> maybe the easiest way to implement this would be a -i (or whatever)
> switch a the src block.

Thanks, I have gone ahead with your suggestion. As you suggest, I've
added a -i switch that prevents the indentation of a block from being
removed during export. If the variable org-src-preserve-indentation[1]
is non-nil, then that is equivalent to having a -i switch on every
source block.

Then the issue remained that an org-exp-block plugin is unable to return
a block with the original indentation if the indentation is removed
before it receives it. So I have made that indentation removal
contingent on the same criteria (non-nil variable or -i switch).

Those 2 commits are in branch ded-indent at
git://repo.or.cz/org-mode/babel.git, and also pasted below.

Dan

Footnotes:

[1] org-src-preserve-indentation also acts in org-src-mode, where it
prevents indentation from being removed when switching between org and
language mode buffers.