fixed: tab copypaste

AppKit/CPTextView/CPParagraphStyle.j

@@ -56,6 +56,12 @@ var kDefaultTabInterval = 28.0;
     return [self initWithTextAlignment:aType location:aLocation options:nil];
 }
 
+// Added to resolve the unrecognized selector exception in the RTF producer
+- (CPTabStopType)tabStopType
+{
+    return _alignment;
+}
+
 - (BOOL)isEqual:(id)other
 {
     if (self === other) return YES;
@@ -217,8 +223,6 @@ var _sharedDefaultParagraphStyle = nil;
 @end
 
 
-// MARK: - CPMutableParagraphStyle Implementation
-
 // MARK: - CPMutableParagraphStyle Implementation
 
 @implementation CPMutableParagraphStyle : CPParagraphStyle

AppKit/CPTextView/CPTextView.j

@@ -3049,8 +3049,9 @@ var _CPCopyPlaceholder = '-';
     // Intercept problematic keys before the browser acts.
     _CPNativeInputField.addEventListener('keydown', function(e) {
 
-        if (e.key === 'Enter' || (e.key === 'Backspace' && _CPNativeInputField.innerHTML === '')) {
+        if (e.key === 'Tab' || e.key === 'Enter' || (e.key === 'Backspace' && _CPNativeInputField.innerHTML === '')) {
             // Prevent browser default action:
+            // - 'Tab': Prevents browser focus navigation, allowing Cappuccino key bindings (like option-tab or tab) to work.
             // - 'Enter': Prevents inserting <div><br></div>.
             // - 'Backspace' on empty: Prevents inserting junk characters on iPadOS.
             e.preventDefault();