Add magic marker to disable argument escaping when necessary

Author: andyleejordan

src/PowerShellEditorServices/Utility/ArgumentUtils.cs

@@ -1,32 +1,39 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
-using System.Text;
 using System.Management.Automation.Language;
+using System.Text;
 
 namespace Microsoft.PowerShell.EditorServices.Utility
 {
     internal static class ArgumentEscaping
     {
         /// <summary>
         /// Escape a PowerShell argument while still making it able to be evaluated in AddScript.
-        ///
-        /// NOTE: This does not "sanitize" parameters, e.g., a pipe in one argument might affect another argument.
-        /// This is intentional to give flexibility to specifying arguments.
-        /// It also does not try to fix invalid PowerShell syntax, e.g., a single quote in a string literal.
+        /// <remarks>
+        /// This does not "sanitize" parameters, e.g., a pipe in one argument might affect another
+        /// argument. This is intentional to give flexibility to specifying arguments. It also does
+        /// not try to fix invalid PowerShell syntax, e.g., a single quote in a string literal.
+        /// </remarks>
         /// </summary>
         public static string Escape(string Arg)
         {
-            // if argument is a scriptblock return as-is
+            // If argument has our magic marker, remove it and don't escape.
+            if (Arg.StartsWith("__psEditorServices_NoEscape_"))
+            {
+                return Arg.Remove(0, "__psEditorServices_NoEscape_".Length);
+            }
+
+            // If argument is a script block return as-is.
             if (Arg.StartsWith("{") && Arg.EndsWith("}"))
             {
                 return Arg;
             }
 
-            // If argument has a space enclose it in quotes unless it is already quoted
+            // If argument has a space enclose it in quotes unless it is already quoted.
             if (Arg.Contains(" "))
             {
-                if (Arg.StartsWith("\"") && Arg.EndsWith("\"") || Arg.StartsWith("'") && Arg.EndsWith("'"))
+                if ((Arg.StartsWith("\"") && Arg.EndsWith("\"")) || (Arg.StartsWith("'") && Arg.EndsWith("'")))
                 {
                     return Arg;
                 }