patch 9.0.1560: Win32: When 'encoding' is set $PATH has duplicate entries Commit: https://github.com/vim/vim/commit/f741e3ec1fcecc8f23f1b37415dc3e80a31d157e Author: K.Takata <kentkt@csc.jp> Date: Mon May 15 16:41:40 2023 +0100 patch 9.0.1560: Win32: When 'encoding' is set $PATH has duplicate entries Problem: Win32: When 'encoding' is set $PATH has duplicate entries. Solution: Only append the directory if it is not there yet. (Ken Takata, closes #12400, closes #12372)

>a+0&#ffffff0@2| @56
|b@2| @56
|~+0#4040ff13&| @58
|~| @58
|[+3#0000000&|N|o| |N|a|m|e|]| |[|+|]| @28|1|,|1| @11|A|l@1
|a+0&&@2| @56
|b@2| @56
|~+0#4040ff13&| @58
|[+1#0000000&|N|o| |N|a|m|e|]| |[|+|]| @28|1|,|1| @11|A|l@1
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