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From: kadal <kadalcalypse@gmail.com>
Subject: Re: ox-html export bug
Date: Fri, 8 Sep 2017 10:18:18 -0700
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>> Fair point.  Would it be sufficient to give these type of links a class,
>> say "org-internal-links".  Then you should be able to explicitly turn off
>> the content for these links.
>>
>>      .org-internal-links::after {content:"";}

I don't know, looks like a bug to me.

> I haven't put much thought into it, but I wonder if it would be possible
> to ignore EXTRA-IDS and only use PREFERRED-ID (see `org-html-headline'),
> i.e., use
> 
>    (or (org-element-property :CUSTOM_ID headline)
>        (org-export-get-reference headline info))
> 
> It could be a problem when publishing to HTML, but I'm not sure at this
> point.

Going back to the original report:

------------------------------
<div id="outline-container-orgf4e5527" class="outline-2">
<h2 id="orgf4e5527"><span class="section-number-2">1</span> heading 1</h2>
</div>

<div id="outline-container-orge4e91c4" class="outline-2">
<h2 id="my-name"><a id="orge4e91c4"></a><span
class="section-number-2">2</span> heading 2</h2>

<div class="outline-text-2" id="text-my-name">
</div>
-------------------------------

The first headline with no CUSTOM_ID exports to "<h2 id="orgf4e5527">"
The second headline with a CUSTOM_ID exports to "<h2 id="my-name"><a 
id="orge4e91c4"></a>"

Seems like the second one should export to either "<h2 id="my-name">" or 
"<h2 id="my-name" id="orge4e91c4">". Not sure why the empty link is 
being inserted or needs to be there at all.

Deepak