Brady Trainor <mail@bradyt.com> writes:

> I had hoped to find about files such as `/tmp/.#fileA` by searching in
> the info manual for ".#". But I did not find such a string there, nor
> via `apropos-documentation`.
>
> If a user encounters such a file in a directory, I think it would lead
> to good discoverability if a manual or docstring had some mention of the
> string ".#", so that one might search for it.
>
> I'm sending this report without having spent a lot of time on it now,
> not sure if this ".#" convention comes from outside of emacs.

We could add an index entry to the info manual. Adding a reference
inside the docstring of 'lock-buffer' would enable
'apropos-documentation' to find it as well.

This does mean that if the implementation of locking ever changes,
weʼd need to update those docs, but I donʼt think thereʼs much chance
of that.

Proposed patch (for emacs-26?)