_ENVIRONMENT.md. Windows does case insensitive env variables

Closes #21907
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Daniel Stenberg 2026-06-08 12:40:55 +02:00
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@ -32,8 +32,8 @@ uses the **ftp_proxy** variable.
These proxy variables are also checked for in their uppercase versions, except
the **http_proxy** one which is only used lowercase. Note also that some
systems actually have a case insensitive handling of environment variables and
then of course **HTTP_PROXY** still works.
systems (like Windows) have a case insensitive handling of environment
variables and then of course **HTTP_PROXY** still works.
An exception exists for the WebSocket **ws** and **wss** URL schemes, where
libcurl first checks **ws_proxy** or **wss_proxy** but if they are not set, it