fix exception when selecting text by clicking behind the last character

src/ui/bigtext/bigtext.py

@@ -479,7 +479,7 @@ class InnerBigText(QWidget):
             # # print("%s + %s = %s" % (line.byte_offset(), char_in_line, current_byte))
         else:
             current_byte = self.model.byte_count()
-        return current_byte
+            return SelectionPos(current_byte, True, 1)
 
     def elided_text(self, text: str, width: int):
         w = width + self.font_metric.horizontalAdvance("…")
@@ -557,7 +557,6 @@ class InnerBigText(QWidget):
 
     def _toggle_follow(self):
         self._follow = not self._follow
-        print(f"follow={self._follow}")
         self.update()
 
     def _update_highlight_selected_text(self):