refactor(COMSPEC): Deprecate use of subshell cmd.exe (ScoopInstaller#4692)

Author: rashil2000

CHANGELOG.md

@@ -31,6 +31,7 @@
   - **depends:** Keep bucket in 'Get-Dependency()' ([#4673](https://github.com/ScoopInstaller/Scoop/issues/4673))
 - **mklink:** Use 'New-Item' instead of 'mklink' ([#4690](https://github.com/ScoopInstaller/Scoop/issues/4690))
 - **rmdir:** Use 'Remove-Item' instead of 'rmdir' ([#4691](https://github.com/ScoopInstaller/Scoop/issues/4691))
+- **COMSPEC:** Deprecate use of subshell cmd.exe ([#4692](https://github.com/ScoopInstaller/Scoop/pull/4692))
 
 ### Builds
 

lib/diagnostic.ps1

@@ -55,13 +55,3 @@ function check_long_paths {
     return $true
 }
 
-function check_envs_requirements {
-    if ($null -eq $env:COMSPEC) {
-        warn '$env:COMSPEC environment variable is missing.'
-        Write-Host "    By default the variable should point to the cmd.exe in Windows: '%SystemRoot%\system32\cmd.exe'."
-
-        return $false
-    }
-
-    return $true
-}

lib/git.ps1

@@ -4,7 +4,7 @@ function git_proxy_cmd {
     if($proxy -and $proxy -ne 'none') {
         $cmd = "SET HTTPS_PROXY=$proxy&&SET HTTP_PROXY=$proxy&&$cmd"
     }
-    & "$env:COMSPEC" /d /c $cmd
+    cmd.exe /d /c $cmd
 }
 
 function git_clone {

libexec/scoop-checkup.ps1

@@ -12,7 +12,6 @@ $issues += !(check_windows_defender $false)
 $issues += !(check_windows_defender $true)
 $issues += !(check_main_bucket)
 $issues += !(check_long_paths)
-$issues += !(check_envs_requirements)
 
 if (!(Test-HelperInstalled -Helper 7zip)) {
     error "'7-Zip' is not installed! It's required for unpacking most programs. Please Run 'scoop install 7zip' or 'scoop install 7zip-zstd'."