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bug#21804: 25.0.50; file-notify-tests failure on Cygwin

From: Ken Brown
Subject: bug#21804: 25.0.50; file-notify-tests failure on Cygwin
Date: Tue, 27 Dec 2016 11:28:56 -0500
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1

Hi Michael,

On 12/27/2016 7:06 AM, Michael Albinus wrote:
Well, gfilenotify uses a native library like inotify or kqueue when
available. If not, it does polling.

I guess the latter happens in the cygwin case. Maybe we need to
determine the polling interval, and to set
file-notify--test-read-event-timeout larger than that. Will check,
whether information this could be retrieved from gfilenotify.

That would be helpful.

I see. I will check further, whether I could modify Fgfile_add_watch
such a way that it returns only when it is able to create events.

And that.

LGTM, please install.


I would also like to modify the expensive tests accordingly. Do you know
where I could retrieve a compiled Emacs 26 for cygwin?

I've just built one and put it on my private Cygwin repository at


There are instructions at that site.  Let me know if anything is unclear.

Best regards,


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