Add Statement property to $MyInvocation (#19027)

src/System.Management.Automation/engine/InvocationInfo.cs

@@ -271,6 +271,18 @@ namespace System.Management.Automation
             }
         }
 
+        /// <summary>
+        /// The full text of the invocation statement, may span multiple lines.
+        /// </summary>
+        /// <value>Statement that was entered to invoke this command.</value>
+        public string Statement
+        {
+            get
+            {
+                return ScriptPosition.Text;
+            }
+        }
+
         /// <summary>
         /// Formatted message indicating where the cmdlet appeared
         /// in the line.

test/powershell/Language/Scripting/MyInvocation.Tests.ps1

@@ -23,6 +23,25 @@ Describe 'Testing of MyInvocation' -Tags "CI" {
         { & myfilter } | Should -Not -Throw
     }
 
+    Context 'MyInvocation works with multi-line invocations' {
+        It 'MyInvocation.Statement works in & Script block' {
+            $a = & {
+                $MyInvocation.Statement
+            }
+            $a.IndexOf('& {
+                $MyInvocation.Statement
+            }') |Should -BeGreaterThan -1
+        }
+        It 'MyInvocation.Statement works in dot sourced Script block' {
+            $a = . {
+                $MyInvocation.Statement
+            }
+            $a.IndexOf('. {
+                $MyInvocation.Statement
+            }') |Should -BeGreaterThan -1
+        }
+    }
+
     Context 'MyInvocation works in Script block' {
 
         It 'MyInvocation works in dot sourced Script block' {