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bug#5372: Calling url-retrieve-synchronously in a timer

From: Lennart Borgman
Subject: bug#5372: Calling url-retrieve-synchronously in a timer
Date: Wed, 13 Jan 2010 17:21:20 +0100

On Wed, Jan 13, 2010 at 5:02 PM, Chong Yidong <address@hidden> wrote:
> Stefan Monnier <address@hidden> writes:
>>> It looks like url-retrieve-synchronously is not finished when run in a
>>> timer.  Is that expected behaviour?
>>> It looks like it hangs in accept-process-output.
>> It's not expected (for me anyway), but I'm not completely
>> surprised either.  Furthermore, it doesn't look like a good thing to
>> do anyway: timer code should not run for an indefinite amount of time,
>> so you should probably use url-retrieve instead.
> Could this be a manifestation of Bug#5359, "process-send-region hangs
> ntEmacs if region >64K"?
> http://debbugs.gnu.org/cgi/bugreport.cgi?bug=5359

The buffer retrieved in my case has point-max 53784.

I tested with a smaller web page and that actually worked. But to my
surprise the original web page also works today.

I do not know what is different. However I have seen several times
that Emacs on w32 can get into bad states. This happens when some kind
of resource is exhausted. The one I can see easily is GDI.

Maybe some of the w32 api calls does not check the return values as they should?

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