Use regex strings in ValidatePattern

Author: michaelblyons

PowerShell.sublime-syntax

@@ -590,6 +590,13 @@ contexts:
     - include: assignment-normal
 
   attributes:
+    - match: (\[)\s*(ValidatePattern)
+      captures:
+        1: punctuation.section.brackets.begin.powershell
+        2: support.function.attribute.powershell
+      push: inside-attribute
+      with_prototype:
+        - include: regex-strings
     - match: (\[)\s*({{attributes}})
       captures:
         1: punctuation.section.brackets.begin.powershell
@@ -1016,16 +1023,19 @@ contexts:
     - include: single-quoted-heredoc-strings
 
   expect-regex-string:
+    - include: regex-strings
+    - include: comma-separators
+    - include: else-pop
+    - include: pop-eol
+
+  regex-strings:
     - match: '{{single_quote}}'
       scope:  meta.string.powershell string.quoted.single.powershell punctuation.definition.string.begin.powershell
       embed: scope:source.regexp
       embed_scope: meta.string.powershell source.regexp.embedded
       escape: ({{single_quote}})
       escape_captures:
         1:  meta.string.powershell string.quoted.single.powershell punctuation.definition.string.end.powershell
-    - include: comma-separators
-    - include: else-pop
-    - include: pop-eol
 
   single-quoted-strings:
     - match: '{{single_quote}}'

Tests/syntax_test_Function.ps1

@@ -436,21 +436,10 @@ function Verb-Noun {
 #       ^ punctuation.section.brackets.begin.powershell
 #        ^^^^^^^^^^^^^^^ support.function.attribute.powershell
 #                       ^ punctuation.section.group.begin.powershell
-#                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ meta.string.powershell string.quoted.single.powershell
-#                        ^ punctuation.definition.string.begin.powershell
-#                              ^^^^^^^ constant.other.placeholder.powershell
-#                              ^ punctuation.definition.placeholder.begin.powershell
-#                                ^ punctuation.separator.powershell
-#                                    ^ punctuation.definition.placeholder.end.powershell
-#                                                                   ^^^^^^ constant.other.placeholder.powershell
-#                                                                   ^ punctuation.definition.placeholder.begin.powershell
-#                                                                     ^ punctuation.separator.powershell
-#                                                                        ^ punctuation.definition.placeholder.end.powershell
-#                                                                                         ^^^^ constant.other.placeholder.powershell
-#                                                                                         ^ punctuation.definition.placeholder.begin.powershell
-#                                                                                           ^ punctuation.separator.powershell
-#                                                                                            ^ punctuation.definition.placeholder.end.powershell
-#                                                                                                ^ punctuation.definition.string.end.powershell
+#                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ meta.string.powershell
+#                        ^ string.quoted.single.powershell punctuation.definition.string.begin.powershell
+#                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ source.regexp.embedded
+#                                                                                                ^ string.quoted.single.powershell punctuation.definition.string.end.powershell
 #                                                                                                 ^ punctuation.section.group.end.powershell
 #                                                                                                  ^ punctuation.section.brackets.end.powershell
 #                                                                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ comment.line.powershell