fix wrapping on scrolled rows

Author: robhagemans

pcbasic/basic/display/text.py

@@ -138,6 +138,9 @@ def scroll_down(self, pagenum, from_line, bottom, attr):
         self.pages[pagenum].row.insert(
             from_line - 1, TextRow(attr, self.width, self._conv, self._dbcs_enabled)
         )
+        # if we were already a wrapping row, make sure the new empty row wraps
+        if self.pages[pagenum].row[from_line-2].wrap:
+            self.pages[pagenum].row[from_line-1].wrap = True
         del self.pages[pagenum].row[bottom-1]
 
     def get_char(self, pagenum, row, col):

pcbasic/basic/display/textscreen.py

@@ -645,7 +645,11 @@ def line_feed(self):
             # self.current_row has changed, don't use row var
             if self.current_row < self.mode.height:
                 self.scroll_down(self.current_row+1)
-            self.text.pages[self.apagenum].row[self.current_row].wrap = True
+                # if we were already a wrapping row, make sure the new empty row wraps
+                #if self.text.pages[self.apagenum].row[self.current_row-1].wrap:
+                #    self.text.pages[self.apagenum].row[self.current_row].wrap = True
+            # ensure the current row now wraps
+            self.text.pages[self.apagenum].row[self.current_row-1].wrap = True
             # cursor moves to start of next line
             self.set_pos(self.current_row+1, 1)