Re: Allow xref to use other than current major-mode

[Dmitry Gutov]

On 08/25/2015 06:23 PM, Eli Zaretskii wrote:

> It would be nice to have that capability without the need to create a
> project.

There may be no need to "create" a project, for a particular backend. 
But a specialized backend (for instance, one for Emacs sources) will 
know the directory tree layout and where to get information from. In 
Emacs's case, for example, from find-func and TAGS files inside lisp/ 
and src/.

And how to combine the information from the different sources better.

> E.g., how about adding to Emacs a few back-ends that support
> widely used combinations of languages, like C and Lisp in our case?

Someone is welcome to take that up. It won't be on my list for a while, 
probably not until after the 25.1 feature freeze.