Windows 10: Buggy environment variable substitution - the order should NOT matter!

In preparation of an upcoming development project I downloaded and installed the latest Maven version.
Then - as instructed - I defined me two environment variables:
Code: M2=%M2_HOME%\bin M2_HOME=C:\Program Files\Apache Software Foundation\apache-maven-3.6.0[/quote] But for some strange reason the former %-placeholder 'M2' is not processed, i.e. "set" just yields:
Code: M2=%M2_HOME%\bin M2_HOME=C:\Program Files\Apache Software Foundation\apache-maven-3.6.0[/quote] It seems that the order in which the env-var dialog stores these variables is important and if a former variable refers to one further down in the alphabetical list, then: bad luck!

To test that hypothesis I defined me:
Code: TestX=%TestY%\test3 TestY=%TestZ%\test2 TestZ=%JAVA_HOME%\test1[/quote] and the result is:
Code: TestX=%TestY%\test3 TestY=%TestZ%\test2 TestZ=C:\Program Files\Java\jdk-11.0\test1[/quote] :-(

This - dear MicroSoft guys - is BUGGY! Such substitutions should/needs to work regardless of the ordering of the environment variables names! Unbelievable, that nobody at MS ever noticed and fixed this!

:)

 

System environment variable won't stick


Running Win10 Home on an Acer Spin 3, 64bit, i7cpu. I try to add a path to the system environment variables by:

1. Control Panel > System > Advanced system settings > Advanced tab > Environment variables

2. The "Environment Variables" window opens.
3. In the "System Variables" pane I select "Path" and click the EDIT button.
4. A list of the current system paths is displayed.
5. I click the NEW button, browse to the path I want to add which is "C:\Python36-32" and click OK. The path "C:\Python36-32" is added to the list of current system paths.
6. I click OK and am returned to the "Environment Variables" window.
7. I click the "X" at the top right to close the "Environment Variables" window.

Now if I click the "Environment Variables" button again (end of step-1) and repeat steps 2-4, the new path I added in step-5 is gone. IOW, adding a new path won't stick.

What am I doing wrong?

 

Searching environment variable in list

I'm using a command that gives me a list of environment variables. When searching in the list, I want to find all environment variables with the word
EXTERNAL; using the following command all that is occurring is all the environment variables are being listed instead of those environment variables with the word
EXTERNAL ?

findstr /c "EXTERNAL"

 

Edit - Set Environment Variables

Recently I upgraded my Machine from Win 8 to Win 10, but I encountered many problems like virtual boxes related issues that does not create any problems prior to upgrading to Win 10.My mean concern as of now is I cant edit the system variable even I logged
as the admin of my machine.I would like to add Java Jdk but windows does not allow me to add the path to environment variables.

Is this a bug? Or what are the steps in order to edit environment variables in Windows 10 machine

Ian