bug#34911: 26.1; doc about lock file names

[Lars Ingebrigtsen]

Noam Postavsky <npostavs@gmail.com> writes:

> How about we stop inviting that?  It sounds like something from before
> user options were invented, and messing around with auto-save functions
> kind of seems like asking for trouble.

[...]

> * doc/lispref/backups.texi (Auto-Saving): Document
> auto-save-file-name-transforms.
> * lisp/files.el (make-auto-save-file-name)
> (auto-save-file-name-p): Remove suggestion to redefine for
> customization.

There was no discussion of this patch, but it makes sense to me, so I
went ahead and applied it to Emacs 28.

Drew had some other suggestions here, but I think this doc change is
sufficient, so I'm closing this bug report.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no