Re: Re: How to add comments in a plain list

[Carsten Dominik <carsten.dominik@gmail.com>]

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