patch 9.0.2134: ml_get error when scrolling Commit: https://github.com/vim/vim/commit/c4ffeddfe5bd1824650e9b911ed9245bf56c69e3 Author: Christian Brabandt <cb@256bit.org> Date: Mon Nov 27 23:25:03 2023 +0100 patch 9.0.2134: ml_get error when scrolling Problem: ml_get error when scrolling after delete Solution: mark topline to be validated in main_loop if it is larger than current buffers line count reset_lnums() is called after e.g. TextChanged autocommands and it may accidentally cause curwin->w_topline to become invalid, e.g. if the autocommand has deleted some lines. So verify that curwin->w_topline points to a valid line and if not, mark the window to have w_topline recalculated in main_loop() in update_topline() after reset_lnums() returns. fixes: #13568 fixes: #13578 Signed-off-by: Christian Brabandt <cb@256bit.org>

| +0#ff404010#ffffff0@1|4| |1+0#0000000&|0|6| @42
| +0#ff404010&@1|3| |1+0#0000000&|0|7| @42
| +0#ff404010&@1|2| |1+0#0000000&|0|8| @42
| +0#ff404010&@1|1| |1+0#0000000&|0|9| @42
|1+0#ff404010&@2| >1+0#0000000&@1|0| @42
| +0#ff404010&@1|1| |1+0#0000000&@2| @42
| +0#ff404010&@1|2| |1+0#0000000&@1|2| @42
| +0#ff404010&@1|3| |1+0#0000000&@1|3| @42
| +0#ff404010&@1|4| |1+0#0000000&@1|4| @42
@32|1@2|,|1| @8|5@1|%|