patch 9.0.2159: screenpos() may crash with neg. column Commit: https://github.com/vim/vim/commit/ec54af4e26952d954a4cc009f62c80ea01445d30 Author: zeertzjq <zeertzjq@outlook.com> Date: Tue Dec 12 16:43:44 2023 +0100 patch 9.0.2159: screenpos() may crash with neg. column Problem: screenpos() may crash with neg. column Solution: validate and correct column closes: #13669 Signed-off-by: zeertzjq <zeertzjq@outlook.com> Signed-off-by: Christian Brabandt <cb@256bit.org>

| +0&#ffffff0@2|s|o|m|e| |t|e|x|t| |h|e|r|e| |a|n|d| |o|t|h|e|r| |t|e|x|t| |t|h|e|r|e| +0&#ffff4012|A|F|T|E|R| | +0&#ffffff0@7| +0#ffffff16#e000002|R|I|G|H|T| 
| +0#0000000#5fd7ff255|B|E|L|O|W| | +0&#ffffff0@52
| +0&#5fd7ff255|A|L|S|O| |B|E|L|O|W| | +0&#ffffff0@47
|L|a|s|t| |l|i|n|e>.| +0&#ffff4012|A|f|t|e|r| |L|a|s|t| | +0&#ffffff0@37
|r|i|g|h|t| |h|e|r|e| @37|s+0#ffffff16#e000002|ö|m|e|和*&|平|t+&|é|x|t
|~+0#4040ff13#ffffff0| @58
|~| @58
| +0#0000000&@41|2|,|1|0| @9|A|l@1|