Re: Question: suppress ask-user-about-lock?

[Michael Albinus]

Qiantan Hong <qhong@mit.edu> writes:

Hi,

>>> Is there a standard way to cause lock-buffer immediately fail?
>> 
>> Do you mean with "fail" that lock-buffer shall do nothing?
> No, I mean it should signal ‘file-locked without asking the user
> (through ask-user-about-lock).
> I intended to use it as a mutex in Elisp program.

What about (untested)

(cl-letf (((symbol-function #'ask-user-about-lock)
           (lambda (file proponent)
             (signal 'file-locked (list file proponent)))))

...)

Best regards, Michael.