bug#19466: 25.0.50; xref-find-def doesn't find C functions

[Eli Zaretskii]

> Date: Sun, 01 Feb 2015 22:53:11 +0200
> From: Dmitry Gutov <dgutov@yandex.ru>
> CC: 19466@debbugs.gnu.org, eller.helmut@gmail.com
> 
> On 02/01/2015 10:30 PM, Eli Zaretskii wrote:
> 
> > They all did the same, AFAICS.
> 
> The end behavior is similar, but in #32, the user can `M-x 
> xref-etags-mode' again to get back to using find-func as xref backend in 
> emacs-lisp-mode buffers.

Then maybe this one is preferable.

> It solves the original complaint, doesn't it? That's the idea.
> 
> If that's actually enough for you, we can add xref-reset-backend from 
> #41 to xref.el as `xref-reset-to-etags', and anyone will be able to
> 
> (add-hook 'emacs-lisp-mode-hook 'xref-reset-to-etags)
> 
> in their init file to get back to using etags. And same with any other 
> major mode that will implement its own xref backend.

Sounds good, thanks.