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#0000e05#a8a8a8255@1>o+0#0000000#ffff4012|n|e| +0&#ffffff0@54
|>@1| +0&#ffff4012@7|t|a|b| +0&#5fd7ff255@46
|>+0&#ffffff0@1| +0&#ffff4012@7|s|p|a|c|e| +0&#5fd7ff255@44
|X+3&#ffffff0|b|u|f@1|e|r| |[|+|]| @30|1|,|1| @11|T|o|p
| +0&&@59
|~+0#4040ff13&| @58
|[+1#0000000&|N|o| |N|a|m|e|]| @32|0|,|0|-|1| @9|A|l@1
|"+0&&|X|b|u|f@1|e|r|"| |[|N|e|w|]| @44