Mending Broken Windows #2

Editor, no Remove-Alias before PowrShell Core.
IValidateSetValuesGenerator missing before PowerShell Core

Edit-TextFile.ps1

@@ -4,9 +4,13 @@
   [string[]]$Path
 )
 
-$local:editor = '/bin/nvim'
-if( (Test-Path env:EDITOR) -and (Test-Path $env:EDITOR) ) {
-  $editor = $env:EDITOR;
+$local:editors = $env:EDITOR,'nvim','code'
+$local:editor = $null
+foreach( $local:testEditor in $editors ) {
+  if( Get-Command -Type Application $testEditor -ErrorAction SilentlyContinue ) {
+    $editor = $testEditor
+    break;
+  }
 }
 
 if( $editor -match 'vim?$' ) {
@@ -17,6 +21,12 @@ if( $sudo ) {
   $editor = "/usr/bin/env sudo $editor"
 }
 
+if( $editor -match 'code(\.exe)?$' ) {
+  if( -not (Get-Process -Name 'code' -ErrorAction SilentlyContinue) ) {
+    & $editor
+  }
+}
+
 $local:arguments = $Path -join "' '"
 if( $Path ) { $arguments = "'$arguments'" }
 

Reload-MyScripts.ps1

@@ -23,7 +23,12 @@ $oldAliases = Get-Alias -Scope $MyAliasScope |
 if( $oldAliases -and $IsVerbose ) { 
   Write-Verbose "Removing: $($oldAliases.Name -join ', ')"
 }
+if( Get-Command Remove-Alias -ErrorAction SilentlyContinue ) {
   $oldAliases | Remove-Alias -Scope $MyAliasScope
+} else {
+  $oldAliases | ForEach-Object { Remove-Item "Alias:$($_.Name)" }
+}
+
 Get-ChildItem (Join-Path $MyPSScriptRoot '*.ps1') |
   ForEach-Object {
     Set-Alias $($_.BaseName) $_.FullName -Scope $MyAliasScope

profile.d/FunctionName.class.ps1

@@ -1,4 +1,4 @@
-class FunctionName: System.Management.Automation.IValidateSetValuesGenerator {
+class FunctionName { #: System.Management.Automation.IValidateSetValuesGenerator {
   static [string[]] _GetValidValues([string]$wordToComplete,[bool]$Strict) {
     $local:possibleValues = Get-Command -Type Function | Select-Object -ExpandProperty Name
     return $(Get-PossibleArguments -WordToComplete $wordToComplete -FullValueSet $possibleValues -Strict:$Strict );

profile.d/MyScript.class.ps1

@@ -1,4 +1,4 @@
-class MyScript : System.Management.Automation.IValidateSetValuesGenerator {
+class MyScript { #: System.Management.Automation.IValidateSetValuesGenerator {
   static [string[]] _GetValidValues([string]$wordToComplete,[bool]$Strict) {
     $local:possibleValues = $(
         Get-ChildItem $global:MyPSScriptRoot -Filter '*.ps1' -Recurse |