bug#23179: 25.0.92; Restore `M-,' to continue etags search

[Dmitry Gutov]

On 04/01/2016 02:03 PM, Eli Zaretskii wrote:

> > Then, how do you search through a set of files using `xref'? Is that even 
> > possible?
>
> You do that by using the XREF buffer and the special commands
> available there.

You can also use next-error and previous-error. If the question is about 
navigating through search results, of course.

> I think the only viable solution is to provide a replacement for
> tags-search that uses the xref UI to browse the results.

By now, we have both project-find-regexp and dired-do-find-regexp, which 
provide different takes on the issue of "search through a set of files".

If you want to have an xref-find-regexp as well, we should first 
understand clearly how it would differ from those two commands. And its 
specification cannot refer to tags files directly.