It's a reference node.  The relevant lines are this:

     refnode = nodes.reference('', '', internal=True)
     refnode['reftitle'] = title

Where the variable 'title' is holding the matter that is supposed to 
include the line breaks.

Thanks!

On Wednesday, February 6, 2019 at 10:47:28 PM UTC-6, Komiya Takeshi wrote:
>
> Hi Chad, 
>
> How do you generate <a> tag in your extension? custom node? raw node? 
> or other solution? 
> The extensions can enhance Sphinx by many ways. So I need to know the 
> your strategy. 
>
> Thanks, 
> Takeshi KOMIYA 
>
> 2019年2月7日(木) 7:38 Chad S <chads...@gmail.com <javascript:>>: 
> > 
> > Hi, 
> > 
> > Working on an extension for Sphinx 1.6.6. I need to obtain output in 
> html that, among other things, will do something like this in links that 
> get written: 
> > 
> > <a href="page.html" title="Some text. 
> > A second line of text. 
> > For clarity, a third."> 
> > 
> > Yes, ugly, but the tooltip in the browser is lineated and that is 
> meaningful. 
> > 
> > However, the two pythonic means of putting breaks in strings aren't 
> working. 
> > 
> > stringval = 'Some text.\r\nA second line of text.\r\nFor clarity, a 
> third' 
> > 
> > or 
> > 
> > stringval ='''Some text. 
> > A second line of text. 
> > For clarity, a third.''' 
> > 
> > In both cases, the final output is: 
> > 
> > <a href="age.html" title="Some text. A second line of text. For clarity, 
> a third."> 
> > 
> > The breaks seem to have been stripped out. 
> > 
> > Also, attempts to use "&#13;", which are valid for raw html, do not work 
> because Sphinx seems to inflexibly convert any ampersand it finds to 
> "&amp;".  So this: 
> > 
> > stringval='"Some text.&#13;A second line of text&#13;For clarity, a 
> third.' 
> > 
> > turns into this: 
> > 
> > <a href="page.html" title="Some text.&amp;#13;A second line of 
> text.&amp;#13;For clarity, a third."> 
> > 
> > Any advice on how to get the needed line breaks to the final output? 
> > 
> > Thanks! 
> > 
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