Re: [Orgmode] Re: How to add comments in a plain list

[Carsten Dominik]

On Sep 22, 2009, at 12:32 PM, René wrote:

> Bernt Hansen <bernt <at> norang.ca> writes:
> > You can ident the comment like this
> >
> > 1. first
> > 2. second
> >
> >    # comment about second item
> >
> > 3. third
> > 4. fourth
>
> Unfortunately in this case your comment gets exported since the `#'  
> is indented.
>
> Of course one doesn't want the comments to appear in the html  
> version of the
> document.
>
> Is there a way to easily solve this issue?

You can always add a function to one of the org-export-preprocess-...  
hooks.
However, if you are not careful, you might remove something like

   #!/bin/sh

   in a source code block, or some normal text where,
   #25 starts a new line by accident.

It may be relatively safe to look for # followed by space, or
lines that have only "#" ad the only nonwhite character on a line.

Something like this might work (untested)

(add-hook
 'org-export-preprocess-before-backend-specifics-hook
 (lambda ()
   (goto-char (point-min))
   (while (re-search-forward "^[ \t]+#\\([ \t]*$\\| .*$\\)\n?" nil t)
     (org-if-unprotected-at (match-beginning 1)
      (replace-match "")))))


HTH

- Carsten