[PATCH] Add FAQ How do I fix find_fast_cwd warnings?

Corinna Vinschen corinna-cygwin@cygwin.com
Tue Nov 14 09:29:00 GMT 2017

Hi Brian,

On Nov 13 11:51, Brian Inglis wrote:
> On 2017-11-13 10:12, Brian Inglis wrote:
> > [full quote deleted]
> > I guess I may have been a little enthusiastic to get something out there we
> > could refer to in future - and reduce the annoyance level for both posters and
> > subscribers - attaching a hopefully more accurate diff for comment, also
> > addressing some of the other points I suggested.
> Made all URIs in messages links, fixed tags, links, improved flow and wording.

Please send this as `git format-patch' with commit message and all.

> +    <para>This happens when the Cygwin release you installed can not find out
> +	how to get your current directory from the Windows release you are
> +	using.</para>

I think this paragraph raises more questions than it answers.  Of course
Cygwin still can get the CWD, just not in the preferred way.  Even if
you change it to more technically correct terms, it doesn't give any
useful info for users.  Let's just drop it.

> +    <para>Unfortunately some projects and products still distribute older
> +	Cygwin releases which do not support newer Windows releases, instead of
> +	installing the current release from the Cygwin project.
> +	They also may not provide any obvious way to keep the Cygwin packages
> +	their application uses up to date with fixes for security issues and
> +	upgrades.</para>
> +    <para>The fix is simply downloading and running Cygwin Setup, following the
> +	instructions in the Internet Setup section of
> +	<ulink url="https://cygwin.com/cygwin-ug-net/setup-net.html">
> +	    Setting Up Cygwin</ulink> in the Cygwin User's Guide.</para>
> +    <para>When running Setup, you should not change most of the values
> +	presented, just select the <literal>Next</literal> button in most
> +	cases, as you already have a Cygwin release installed and only want to
> +	upgrade your current installation.
> +	You should make your own selection if the internet connection to your
> +	system requires a proxy; and you must always pick an up to date Cygwin
> +	download (mirror) site, preferably the site nearest to your system for
> +	faster downloads, as shown with more details to help you choose on the
> +	<ulink url="https://cygwin.com/mirrors.html">
> +	    Mirror Sites</ulink> web page.</para>
> +    <para>Cygwin Setup will download and apply updates to all packages required
> +	for Cygwin itself and installed applications.
> +	Any problems with applying updates, or the application after updates,
> +	should be reported to the project or product vendor for follow up
> +	action.</para>
> +    <para>As Cygwin is a volunteer project, and we can not provide support for
> +	older releases installed by projects or products, but would like to be
> +	able to follow up to reduce reports of these issues if possible, it
> +	would be helpful if you would send us a quick
> +	<ulink url="mailto:cygwin@cygwin.com?subject=Source%20of%20application%20providing%20Cygwin%20warning%20about%20FAST_CWD">
> +	    email</ulink> to let us know where you obtained the application
> +	which installed the older Cygwin release: whether it was purchased from
> +	a vendor or a project downloaded from the Internet, any related web
> +	pages, or other details you may have readily available.</para>

Do we really want all this information?  It should be sufficient to know
the name of the project, so it's in the records for later reference.
But we won't follow up on this anyway.  There are just too many
well-meaning, but short-lived TPPs on the web using Cygwin under the


Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat
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