I'm trying to install Composer on Windows manually, as Composer-Setup.exe didn't work (I'll file a separate issue for that shortly). The instructions at https://getcomposer.org/download/ worked and gave me composer.phar, but the instructions at https://getcomposer.org/doc/00-intro.md#manual-installation produce no new file. I'm using PowerShell on Windows 10.

My composer.json: N/A

Output of composer diagnose: N/A

When I run this command:

echo @php "%~dp0composer.phar" %*>composer.bat

I get the following output:

%~dp0composer.phar
%*>composer.bat

And I expected this to happen:

I'd get a composer.bat file.