org-block-regexp questions

org-block-regexp questions

[Marcin Borkowski]

Hi list,

I'm studying org-block-regexp.  One thing that bugs me is this part:

#\\+begin_?

It suggests to me that the underscore after "begin" might be optional;
but a quick experiment with the exporter shows that this is not the
case.

Next, this part:

\\([^ \n]+\\)

would suggest that TAB is a valid part of the name of the block.
Strange, isn't it?

Finally, the rationale behind

\\(\\([^\n]+\\)\\)?

escapes me completely.  What's the use of groups nested like this?

Any ideas?

-- 
Marcin Borkowski               This email was proudly sent
http://mbork.pl                from my Emacs.

Re: org-block-regexp questions

[Nicolas Goaziou]

Hello,

Marcin Borkowski <mbork@wmi.amu.edu.pl> writes:

> I'm studying org-block-regexp.  One thing that bugs me is this part:
>
> #\\+begin_?
>
> It suggests to me that the underscore after "begin" might be optional;
> but a quick experiment with the exporter shows that this is not the
> case.

This is the case for dynamic blocks

  (info "(org) Dynamic blocks")

> Next, this part:
>
> \\([^ \n]+\\)
>
> would suggest that TAB is a valid part of the name of the block.
> Strange, isn't it?

It is. "\\(\\S-+\\)" would be more appropriate I think (this is also
what is used in "org-element.el").

> Finally, the rationale behind
>
> \\(\\([^\n]+\\)\\)?
>
> escapes me completely.  What's the use of groups nested like this?

This looks like a plain bug, a minor one, tho. Before fixing it, Someone
has to make sure it doesn't break matching groups somewhere.


Regards,

-- 
Nicolas Goaziou