Environment variables containing brackets break powershell shell

[hutchinson]

Hi All,

Hope you're all well! First off, thanks for a great library, have really enjoyed getting onboard with it!

We've noticed a small bug when trying to create packages that contain environment variables with brackets in them and launching it in powershell. Here is a small repro case:

name = 'testpackage'
version = '1.0.0'

requires = [
    'platform-windows'
]

build_command = False

def commands():
    env['ENVVARWITH(x86)'] = 'This_breaks_powershell'

Running it with: rez build -i & rez-env testpackage --shell=powershell gives the following error:

[...snip...]
Temp\rez_context_68oyvs1b\context.ps1:53 char:16
+ $Env:ENVVARWITH(x86) = "This_breaks_powershell"
+                ~
Unexpected token '(' in expression or statement.

Looks like using the alternative syntax to set environment variables should work (although I haven't tried it):

Set-Item "env:ENVVARWITH(x86)" "This is fine"
dir env:

Name                           Value
----                           -----
ALLUSERSPROFILE                C:\ProgramData
[...snip...]
ENVVARWITH(x86)                This is fine

Will look to get a PR over to you ASAP.