Fixes for automatic variables (#166)

* fixes #133
corrects scope mismatch between #variable and #variableNoProperty for
automatics and fixes REGEX for $$, $^, and $?

* fix tests for automatic variable scope change

* add tests for $$, $^, $?

Author: msftrncs

PowerShellSyntax.tmLanguage

@@ -997,7 +997,7 @@
 						<key>0</key>
 						<dict>
 							<key>name</key>
-							<string>support.constant.automatic.powershell</string>
+							<string>support.variable.automatic.powershell</string>
 						</dict>
 						<key>1</key>
 						<dict>
@@ -1013,7 +1013,7 @@
 					<key>comment</key>
 					<string>Automatic variables are not constants, but they are read-only. In monokai (default) color schema support.variable doesn't have color, so we use constant.</string>
 					<key>match</key>
-					<string>(\$)(?i:(\$|\^|\?|_|Args|ConsoleFileName|Event|EventArgs|EventSubscriber|ForEach|Input|LastExitCode|Matches|MyInvocation|NestedPromptLevel|Profile|PSBoundParameters|PsCmdlet|PsCulture|PSDebugContext|PSItem|PSCommandPath|PSScriptRoot|PsUICulture|Pwd|Sender|SourceArgs|SourceEventArgs|StackTrace|Switch|This))((?:\.(?:\p{L}|\d|_)+)*\b)?\b</string>
+					<string>(\$)((?:[$^?])|(?i:_|Args|ConsoleFileName|Event|EventArgs|EventSubscriber|ForEach|Input|LastExitCode|Matches|MyInvocation|NestedPromptLevel|Profile|PSBoundParameters|PsCmdlet|PsCulture|PSDebugContext|PSItem|PSCommandPath|PSScriptRoot|PsUICulture|Pwd|Sender|SourceArgs|SourceEventArgs|StackTrace|Switch|This)\b)((?:\.(?:\p{L}|\d|_)+)*\b)?</string>
 				</dict>
 				<dict>
 					<key>captures</key>
@@ -1297,7 +1297,7 @@
 					<key>comment</key>
 					<string>Automatic variables are not constants, but they are read-only...</string>
 					<key>match</key>
-					<string>(\$)(?i:(\$|\^|\?|_|Args|ConsoleFileName|Event|EventArgs|EventSubscriber|ForEach|Input|LastExitCode|Matches|MyInvocation|NestedPromptLevel|Profile|PSBoundParameters|PsCmdlet|PsCulture|PSDebugContext|PSItem|PSCommandPath|PSScriptRoot|PsUICulture|Pwd|Sender|SourceArgs|SourceEventArgs|StackTrace|Switch|This))\b</string>
+					<string>(\$)((?:[$^?])|(?i:_|Args|ConsoleFileName|Event|EventArgs|EventSubscriber|ForEach|Input|LastExitCode|Matches|MyInvocation|NestedPromptLevel|Profile|PSBoundParameters|PsCmdlet|PsCulture|PSDebugContext|PSItem|PSCommandPath|PSScriptRoot|PsUICulture|Pwd|Sender|SourceArgs|SourceEventArgs|StackTrace|Switch|This)\b)</string>
 				</dict>
 				<dict>
 					<key>captures</key>

spec/testfiles/syntax_test_Class.ps1

@@ -63,7 +63,7 @@ class TypeName
         #                ^ punctuation.section.group.end.powershell
         $this.P1 = $s
         # <- punctuation.definition.variable.powershell
-        # ^ support.constant.automatic.powershell
+        # ^ support.variable.automatic.powershell
         #     ^^ variable.other.member.powershell
         #        ^ keyword.operator.assignment.powershell
         #          ^ punctuation.definition.variable.powershell
@@ -110,15 +110,15 @@ class TypeName
     #                           ^ punctuation.section.group.end.powershell
         $this.P3 = $i
         # <- punctuation.definition.variable.powershell
-        # ^ support.constant.automatic.powershell
+        # ^ support.variable.automatic.powershell
         #     ^^ variable.other.member.powershell
         #        ^ keyword.operator.assignment.powershell
         #          ^ punctuation.definition.variable.powershell
         #           ^ variable.other.readwrite.powershell
         return $this.P3
         # <- keyword.control.powershell
         #      ^ punctuation.definition.variable.powershell
-        #       ^^^^ support.constant.automatic.powershell
+        #       ^^^^ support.variable.automatic.powershell
         #            ^^ variable.other.member.powershell
     }
 }

spec/testfiles/syntax_test_Function.ps1

@@ -305,7 +305,7 @@ function Verb-Noun {
         #               ^ meta.attribute.powershell meta.scriptblock.powershell
         #                ^^^^^^^^^ meta.scriptblock.powershell support.function.powershell
         #                          ^ meta.scriptblock.powershell punctuation.definition.variable.powershell
-        #                           ^ meta.scriptblock.powershell support.constant.automatic.powershell
+        #                           ^ meta.scriptblock.powershell support.variable.automatic.powershell
         #                            ^ meta.attribute.powershell meta.scriptblock.powershell
         #                             ^ meta.attribute.powershell punctuation.section.group.end.powershell
         #                              ^ meta.attribute.powershell punctuation.section.bracket.end.powershell
@@ -359,7 +359,7 @@ function Verb-Noun {
         # <- keyword.control.powershell
         #  ^ punctuation.section.group.begin.powershell
         #   ^ punctuation.definition.variable.powershell
-        #    ^^^^^^^^ support.constant.automatic.powershell
+        #    ^^^^^^^^ support.variable.automatic.powershell
         #             ^^^^^^^^^^^^^ variable.other.member.powershell
         #                          ^ punctuation.section.group.begin.powershell
         #                                                ^ punctuation.section.group.end.powershell

spec/testfiles/syntax_test_TheBigTestFile.ps1

@@ -89,12 +89,18 @@ throw "Do not run this file!"
 #                                         ^^    ^^     ^^    ^^      ^ ^ string.unquoted.powershell
 
 # Automatic variables
-$_
+$_, $$, $^, $?
 # <- punctuation.definition.variable.powershell
- # <- support.constant.automatic.powershell
+ # <- support.variable.automatic.powershell
+#   ^ punctuation.definition.variable.powershell
+#    ^ support.variable.automatic.powershell
+#       ^ punctuation.definition.variable.powershell
+#        ^ support.variable.automatic.powershell
+#           ^ punctuation.definition.variable.powershell
+#            ^ support.variable.automatic.powershell
 $args
 # <- punctuation.definition.variable.powershell
-# ^ support.constant.automatic.powershell
+# ^ support.variable.automatic.powershell
 $error
 # <- punctuation.definition.variable.powershell
 # ^ support.constant.variable.powershell
@@ -103,7 +109,7 @@ $home
 # ^ support.constant.variable.powershell
 $foreach
 # <- punctuation.definition.variable.powershell
-# ^ support.constant.automatic.powershell
+# ^ support.variable.automatic.powershell
 
 # Normal variables
 $variable
@@ -179,6 +185,12 @@ $variable.Name
 #          ^ not:punctuation.definition.variable.powershell
 #           ^ not:variable.other.readwrite.powershell
 
+# double check scopes for automatic variables in strings
+"$_ $$ $Pwd"
+# ^ support.variable.automatic.powershell
+#    ^ support.variable.automatic.powershell
+#       ^ support.variable.automatic.powershell
+
 # Single quotes string
 'This is a string'
 # <- punctuation.definition.string.begin.powershell string.quoted.single.powershell
@@ -912,7 +924,7 @@ class Vehicle {
 #                     ^ variable.other.readwrite.powershell
         $this.Mileage += $NumberOfMiles
 #       ^ punctuation.definition.variable.powershell
-#        ^^^^ support.constant.automatic.powershell
+#        ^^^^ support.variable.automatic.powershell
 #             ^ variable.other.member.powershell
 #                     ^^ keyword.operator.assignment.powershell