Fix TypeError when selecting autocomplete on empty masked input

Changelog.md

@@ -21,6 +21,7 @@
 
 ### Fixed
 
+- Auto-complete select error when input is empty (TypeError: Cannot read properties of undefined (reading 'length'))
 - Minus is being deleted with the first digit #2860
 - Problems with deleting static chars in alternator mask #2648
 - Backspace on controlled input adds "backspace" text to the value #2865

inputmask-pages/src/assets/Changelog.md

@@ -21,6 +21,7 @@
 
 ### Fixed
 
+- Minus is being deleted with the first digit #2860
 - Problems with deleting static chars in alternator mask #2648
 - Backspace on controlled input adds "backspace" text to the value #2865
 - Cannot read properties of null (reading 'inputmask') FormData patch #2841

lib/eventhandlers.js

@@ -508,9 +508,18 @@ const EventHandlers = {
           }, 0);
           break;
         case "deleteContentBackward":
-          var keydown = new $.Event("keydown");
-          keydown.key = keys.Backspace;
-          EventHandlers.keyEvent.call(input, keydown);
+          if (e.inputType && e.inputType.startsWith("insert")) {
+            // e.inputType indicates an insert operation (e.g. browser autocomplete
+            // with insertReplacementText) but analyseChanges incorrectly detected
+            // a deletion due to caret position / buffer length mismatch.
+            // Apply the value directly instead of dispatching a backspace event.
+            applyInputValue(input, inputValue);
+            caret.call(inputmask, input, caretPos.begin, caretPos.end, true);
+          } else {
+            var keydown = new $.Event("keydown");
+            keydown.key = keys.Backspace;
+            EventHandlers.keyEvent.call(input, keydown);
+          }
           break;
         default:
           applyInputValue(input, inputValue);