Source block fontification is achieved by copying source block contents into temporary buffer under appropriate major mode and mirroring face text-properties into original buffer.

Problem is that this procedure doesn't account for user option `org-edit-src-content-indentation'. This option adds decorative indentation to contents of source block after editing with command `org-edit-src-code'.

Correct behavior would be to strip this indentation in order to access the actual actual source block content. This behavior can be observed during expansion and during execution of `org-edit-src-code'.

However, when function `org-src-font-lock-fontify-block' copies contents of src block into temporary buffer it leaves the indentation present. Beginning whitespace can be significant to some languages semantics and major-mode fontification routines.

I have attached a file which will let you see examples of both correct and incorrect behavior.

On 21 March 2014 12:23, Bastien <bzg@gnu.org> wrote:

Hi Michael,

thanks for the patch.

Pontus Michael <m.pontus@gmail.com> writes:

> Primary reason for this change is to fix the problem which I describe
> as
> follows:
>
> This function is not 100% compatible with a org-edit-src facility,
> which provides an option to have indentation added to the code inside
> the block after using command `org-edit-src-code' to edit it. This
> command also handles removal of indentation upon insertion of the
> code
> in temporary buffer where editing of the code will in relevant
> major-mode.

I'm not sure I understand what the real problem is.

Can you describe it against the behavior of the current version?
And maybe provide a minimal recipe to reproduce it?

Did you catch any side-effect of your patch?

Thanks,

--
Bastien