bug#43086: [PATCH] Allow tags backend to not query for TAGS file

[Lars Ingebrigtsen]

Philip Kaludercic <philipk@posteo.net> writes:

>> This was over a year ago, and it's unclear whether we wanted to do in
>> Philip's patch's direction or not?  
>
> What exactly was the issue with my suggestion?

Dmitry said:

> I set etags-query-file to nil and call xref-find-references with
> ido-mode enabled. And still get queried for a tags file.
> 
> Because etags--xref-backend still returns 'etags, but then
> xref-backend-identifier-completion-table calls
> tags-lazy-completion-table, which does the prompting.
> 
> If I make etags--xref-backend return nil, I simply get "No applicable
> method: xref-backend-identifier-completion-table, nil" instead.
> 
> So a deeper change is needed.