Assert cursor_row >= 0

sebastinas · sebastinas · commit dc23149d4270 · 2021-01-24T15:10:12.000+01:00
diff --git a/bpython/curtsiesfrontend/repl.py b/bpython/curtsiesfrontend/repl.py
@@ -1576,7 +1576,7 @@ def move_screen_up(current_line_start_row):
                 + wcswidth(self.stdin.current_line[: self.stdin.cursor_offset]),
                 width,
             )
-            assert cursor_column >= 0, cursor_column
+            assert cursor_row >= 0 and cursor_column >= 0, (cursor_row, cursor_column)
         elif self.coderunner.running:  # TODO does this ever happen?
             cursor_row, cursor_column = divmod(
                 (
@@ -1585,7 +1585,8 @@ def move_screen_up(current_line_start_row):
                 ),
                 width,
             )
-            assert cursor_column >= 0, (
+            assert cursor_row >= 0 and cursor_column >= 0, (
+                cursor_row,
                 cursor_column,
                 len(self.current_cursor_line),
                 len(self.current_line),
@@ -1601,7 +1602,8 @@ def move_screen_up(current_line_start_row):
                 + self.number_of_padding_chars_on_current_cursor_line(),
                 width,
             )
-            assert cursor_column >= 0, (
+            assert cursor_row >= 0 and cursor_column >= 0, (
+                cursor_row,
                 cursor_column,
                 len(self.current_cursor_line),
                 len(self.current_line),
