Shift + home/end on Mac (#85264)

packages/flutter/lib/src/rendering/editable.dart

@@ -997,7 +997,7 @@ class RenderEditable extends RenderBox with RelayoutWhenSystemFontsChangeMixin,
   //
   // See also:
   //
-  //   * _expandSelectionToEnd
+  //   * _extendSelectionToEnd
   void _extendSelectionToStart(SelectionChangedCause cause) {
     if (selection!.extentOffset == 0) {
       return;

packages/flutter/lib/src/widgets/default_text_editing_shortcuts.dart

@@ -379,6 +379,8 @@ class DefaultTextEditingShortcuts extends Shortcuts {
     SingleActivator(LogicalKeyboardKey.arrowLeft, shift: true): ExtendSelectionLeftTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowRight, shift: true): ExtendSelectionRightTextIntent(),
     SingleActivator(LogicalKeyboardKey.arrowUp, shift: true): ExtendSelectionUpTextIntent(),
+    SingleActivator(LogicalKeyboardKey.end, shift: true): ExpandSelectionToEndTextIntent(),
+    SingleActivator(LogicalKeyboardKey.home, shift: true): ExpandSelectionToStartTextIntent(),
     SingleActivator(LogicalKeyboardKey.keyA, meta: true): SelectAllTextIntent(),
     // The following key combinations have no effect on text editing on this
     // platform:
@@ -389,8 +391,6 @@ class DefaultTextEditingShortcuts extends Shortcuts {
     //   * Control + shift + arrow right
     //   * End
     //   * Home
-    //   * Shift + end
-    //   * Shift + home
     //   * Control + delete
     //   * Control + backspace
   };