Re: why 4 inotfy events when saving a file?

[Eli Zaretskii]

> Date: Sun, 10 Mar 2013 22:44:42 +0100
> From: Gregor Zattler <telegraph@gmx.net>
> 
> saving a file from Emacs gives 4 inotify events:
> 
> how to reproduce:
> 
>    on first terminal do:
>       emacs-snapshot -nw -Q /tmp/inotify.test
>       modify file
>    
>    
>    on second terminal do
>       inotifywait -m  -q --format '%e %w%f' /tmp/inotify.test
>    
>    
>    on first terminal do 
>       ^x^s (safe buffer)
>    
>    result on second terminal is:
>       MODIFY /tmp/inotify.test
>       OPEN /tmp/inotify.test
>       MODIFY /tmp/inotify.test
>       CLOSE_WRITE,CLOSE /tmp/inotify.test
> 
> 
> why are there so many events?

Because that's what Emacs does when it saves the file, first to the
old version, then to the new.  Take a look at the implementation of
write-region, which is the primitive used by save-buffer to write the
buffer to its file, you will see all those operations there.