Re: [O] Questions about exporting: subtitle, level formating, custom highlight markers error

[John Kitchin]

You may find this post on highlighting text helpful:
http://kitchingroup.cheme.cmu.edu/blog/2015/07/28/A-highlight-annotation-mode-for-Emacs-using-font-lock/

I think it also lays the foundation for thinking about how to get it to
export, although you would need to do this as a preprocessing step
before the org export to replace highlighted regions by the appropriate markup.

It also sounds like you could use the highlight-regexp function for what
you want.

Something like this might do what you want (use the face you prefer).

(defface my-face3
  `((t (:inherit org-link :foreground "red")))
  "My face")


(highlight-regexp "·[^·]*·" 'my-face3)

(unhighlight-regexp "·[^·]*·")



Xiha writes:

·test·

> Thanks guys. Getting closer - but please don't overestimate my backgound
> knowledge :)
>
> On 07/28/2015 02:05 PM, Eric S Fraga wrote:
>> You need to differentiate between two aspects: highlighting of text
>> within a org buffer and what happens to text when exported.
> Yes. Principally, I want the former.
>
> As to the latter: (1) my custom highlighting shouldn't break exporting.
> (2) /If/ highlighting can appear in the exported document, that's a
> bonus. But clearly it's not trivial to do; so never mind.
>
>> In the new exporter, I don't think you can implement anything that covers
>> both use cases.
>>
>> I am not entirely sure what it is you want.  If you want just one of
>> these, for the former, font-lock-add-keywords is probably what you want
>> to pursue.
> Right, so grabbing code from the manual about font lock mode
> <https://www.gnu.org/software/emacs/manual/html_node/emacs/Font-Lock.html>,
> how do I adapt it? I tried putting this in my .emacs file
>
> ;; Highlight text between ·interpuncts·
> (add-hook 'org-mode-hook
>            (lambda ()
>             (font-lock-add-keywords nil
>              '(("·\w·" 1
>                 font-lock-warning-face t)))))
>
> but that doesn't work. Probably that regexp is all wrong?
>
> Also, I don't want it to use font-lock-warning-face particularly. (How)
> can I define a new face for this purpose?
>
> Nick Dokos wrote:
>> Emphasis is detected in the parser, so it is indeed difficult to add new
>> emphasis for export.
>>
>> Since you don't care about the added emphasis in the exported document
>> (only in the org buffer), using latest org from git works OK,
> So do I understand correctly that this is a completely different route
> than the font-lock-add-keywords one above? I.e. using this latest git
> version, I can define the highlight marker as I did and described
> earlier, and there's no need for a new face, because it uses the
> 'highlight' defined in the theme I'm using. Correct?
>
> I cloned the git files, but I'm wary of the next steps. If I just make
> and make install, will it not half-overwrite my current stable Org, and
> become a big mess? Sorry, this stuff is new to me and not really obvious.
>
> Also: I tried reinstalling Org via the menu, Options >> Manage Emacs
> Packages in hopes that it would install the git version while taking
> care of avoiding a mess. It now lists 20150727 as the version, so that's
> recent, but is that the 'bleeding edge' version or the stable version at
> that date? It didn't solve the problem, at any rate.
>
>> except
>> that the marker characters are copied verbatim to the output, so you'll
>> have some cleanup to do.
> That's okay. It's not a problem for draft versions of the document; and
> by the time the final document is ready, all this temporary highlighting
> should be gone!
>
>> I also tried 8.2.9 and got an error, but the error is different from
>> what you get (backtrace attached).
> I am using 8.2.10 not 8.2.9 so that may explain the difference.
>
> cheers

--
Professor John Kitchin
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@johnkitchin
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