Re: LOCK-BUFFER when two buffer visits the same buffer

[Eli Zaretskii]

> From: Qiantan Hong <qhong@mit.edu>
> Date: Sat, 11 Dec 2021 10:00:00 +0000
> Accept-Language: en-US
> 
> I do lock-buffer in the first buffer, then in the second buffer,
> and I killed the second buffer, the lock is gone — even it seems
> that buffer one should hold the lock!

lock-buffer doesn't support what you are evidently trying to do.  Its
intended use is to prevent simultaneous modifications of a file by two
users, or by a single user from two separate instances of Emacs.  You
want reference counting (and probably also locking the file in the
filesystem), and that isn't supported.