fix(env): Publish environment change when deleting variable (#5631)

* fix(env): Publish environment change when deleting variable

* Update CHANGELOG.md

Author: rashil2000

CHANGELOG.md

@@ -18,7 +18,7 @@
 - **core:** Fix `is_in_dir` under Unix ([#5391](https://github.com/ScoopInstaller/Scoop/issues/5391))
 - **core:** Rewrite config file when needed ([#5439](https://github.com/ScoopInstaller/Scoop/issues/5439))
 - **core:** Prevents leaking HTTP(S)_PROXY env vars to current sessions after Invoke-Git in parallel execution ([#5436](https://github.com/ScoopInstaller/Scoop/pull/5436))
-- **env:** Avoid automatic expansion of `%%` in env ([#5395](https://github.com/ScoopInstaller/Scoop/issues/5395), [#5452](https://github.com/ScoopInstaller/Scoop/pull/5452))
+- **env:** Avoid automatic expansion of `%%` in env ([#5395](https://github.com/ScoopInstaller/Scoop/issues/5395), [#5452](https://github.com/ScoopInstaller/Scoop/pull/5452), [#5631](https://github.com/ScoopInstaller/Scoop/pull/5631))
 - **install:** Fix download from private GitHub repositories ([#5361](https://github.com/ScoopInstaller/Scoop/issues/5361))
 - **scoop-info:** Fix errors in file size collection when `--verbose` ([#5352](https://github.com/ScoopInstaller/Scoop/pull/5352))
 - **shim:** Use bash executable directly ([#5433](https://github.com/ScoopInstaller/Scoop/issues/5433))

lib/core.ps1

@@ -699,6 +699,7 @@ function env($name, $global, $val = '__get') {
         $EnvRegisterKey.GetValue($name, $null, $RegistryValueOption)
     } elseif ($val -eq $null) {
         $EnvRegisterKey.DeleteValue($name)
+        Publish-Env
     } else {
         $RegistryValueKind = if ($val.Contains('%')) {
             [Microsoft.Win32.RegistryValueKind]::ExpandString