Fix End of Doc Bugs

Author: thecoolwinter

Sources/CodeEditTextView/TextLayoutManager/TextLayoutManager+Public.swift

@@ -166,7 +166,7 @@ extension TextLayoutManager {
     /// - Parameter offset: The offset to create the rect for.
     /// - Returns: The found rect for the given offset.
     public func rectForOffset(_ offset: Int) -> CGRect? {
-        guard offset != lineStorage.length else {
+        guard offset < lineStorage.length else {
             return rectForEndOffset()
         }
         guard let linePosition = determineVisiblePosition(for: lineStorage.getLine(atOffset: offset))?.position else {

Sources/CodeEditTextView/TextView/TextView+Mouse.swift

@@ -12,13 +12,13 @@ extension TextView {
         // Set cursor
         guard isSelectable,
               event.type == .leftMouseDown,
-              let offset = layoutManager.textOffsetAtPoint(self.convert(event.locationInWindow, from: nil)),
-              let content = layoutManager.contentRun(at: offset) else {
+              let offset = layoutManager.textOffsetAtPoint(self.convert(event.locationInWindow, from: nil)) else {
             super.mouseDown(with: event)
             return
         }
 
-        if case let .attachment(attachment) = content.data, event.clickCount < 3 {
+        if let content = layoutManager.contentRun(at: offset),
+           case let .attachment(attachment) = content.data, event.clickCount < 3 {
             handleAttachmentClick(event: event, offset: offset, attachment: attachment)
             return
         }