Case handling of environment variables

[Volker Quetschke <quetschke at scytek dot de>]

When you search the archives you find a few messages stating that
windows environment variables get converted to upper case. There
was even a patch by Ernie Coskrey discussing a new option controlling
this behavior on cygwin-patches.

Can anyone point me to a message/webpage that explaines the reason
for this conversion? Unfortunately I didn't find any explanation
in the archives or the FAQ or the User's Guide.

I'm guessing here: Is the reason for this behavior that cygwin programs
can use upper/lower/mixed case simultaneously
(In bash:
$ export a=1; export A=2; echo $a $A
1 2
)
and windows cmd.exe cannot?

Volker

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