How to add a title attribute from a different field to a link produced by a view
You can achieve this by using   views Rewrite results feature, Rewrite your Link with checking Override the output of this field with custom text and put your markup there and with Replacement patterns put your title as  your link attribute title. 

More details Provided by @Raf

Thanks to zhilevan for pointing me in the right direction. After much trial and error this is the only thing I got to work other than completely rewriting the input with custom html.


I needed to add a "path to content" field. Note my fields are called 'field_heading' and 'title' respectively.


 

Note: the field that will actually host the link has to be at the bottom of the list. I wasted ages trying to figure out why I couldn't target my title text before realising this...


You need to uncheck "Link to content" in the setting for the host field - in my case 'Heading'





In the 'Rewrite output' section you need to actually provide a link or it will not work - or at least I could not get it to work without it. So the 'path' field I added earlier was used here as the path for the link. I could then add title field to the title attribute. You can see the available replacement patterns in the drop down with that name.




and the title attribute override...



Anyhoo, that was what i had to do to get it to work. Hopefully it is useful to someone else. I would love to see a simpler way to do this.