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

[Andy Moreton]

On Sun 03 Apr 2016, Eli Zaretskii wrote:

>> Date: Sun, 3 Apr 2016 21:11:28 +0200
>> From: Anders Lindgren <andlind@gmail.com>
>> Cc: Brief Busters <dgutov@yandex.ru>, 23179@debbugs.gnu.org
>> 
>>  What is the minimum set of changes that will cause you to change your
>>  mind?
>> 
>> Incremental search and query-replace commands (that doesn't show the xref 
>> UI).
>
> Why is showing the UI a problem?  You can always delete the window if
> you don't want to see it.  "C-x 0" is all it takes.

Why should this extra UI appear ? Emacs users who are accustomed to the
existing facilities will find it annoying, and start filing bug reports
about an obvious regression.

By all means add new facilites with xref, but without loss of existing
keybindings that many people have ingrained into muscle memory.

    AndyM