Environment variable documentation

[Ken Brown]

On 12/1/2009 4:45 AM, Corinna Vinschen wrote:
> On Nov 30 17:04, Ken Brown wrote:
>> The discussion currently going on in the thread
>>
>>   http://cygwin.com/ml/cygwin/2009-11/threads.html#00892
>>
>> makes me think that the section on environment variables in the
>> user's guide (http://cygwin.com/1.7/cygwin-ug-net/setup-env.html)
>> could use some expansion.  For example, it's not stated explicitly
>> which Windows environment variables get imported into Cygwin (all of
>> them?), nor is there a complete list of variables containing paths
> 
> Yes, all of them.
> 
>> that get converted to Unix format.  PATH, HOME, and LD_LIBRARY_PATH
>> are mentioned, but TMPDIR, TMP, and TEMP are omitted.  I think the
>> last three should be listed, along with the suggestion that users
>> might want to unset them in the Cygwin environment.
> 
> Yes, TMPDIR, TMP, and TEMP are handled the same way as PATH, HOME, and
> LD_LIBRARY_PATH.  These six variables are the set of environment
> variables which are subject to path conversion from Windows to POSIX and
> vice versa.
> 
>> I would be willing to take a stab at writing a patch if the
>> developers think this would be useful.
> 
> That sounds like a nice idea.

OK, my patch is attached.  It anticipates the change to the default 
.bashrc file that we've been discussing in the thread cited above.

Ken
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