bug#29450: 26.0.90; No check for nil in some filenotify functions

[Michael Albinus <michael.albinus@gmx.de>]

John Wiegley <johnw@gnu.org> writes:

Hi John,

> I've had file-notify back on for a few days now, and this has not happened
> again, so I'm fine with closing this issue.

I do it herewith.

> However -- and this is a separate bug -- I had to disable it again because it
> was stalling out Emacs regularly. I'd ran an operation that changed the state
> of the disk, and then Emacs would be locked up for minutes at a time until I
> hit C-g repeatedly. Finally, I ran Instruments to see what was going on, and
> it was stuck in a busy loop reading directories, spending 92% of its time
> calling delq over and over again.

In function `file-notify-handle-event', there's a commented `message'
call. Could you enable this, and send the output when this problem
happens, again?

> But that's a separate issue, and disabling file-notify cured the performance
> problem.

Do you write another bug report for this?

Best regards, Michael.