patch 8.2.4166: undo synced when switching buffer in another window Commit: https://github.com/vim/vim/commit/e615db06046312e74886fa1ef98feb5a9db2a7c3 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jan 20 21:00:54 2022 +0000 patch 8.2.4166: undo synced when switching buffer in another window Problem: Undo synced when switching buffer in another window. Solution: Do not sync undo when not needed. (closes https://github.com/vim/vim/issues/9575)

#! /bin/sh
#
# which.sh -- find where an executable is located.  It's here because the
# "which" command is not supported everywhere.  Used by Makefile.

IFS=":"
for ac_dir in $PATH; do
	if test -f "$ac_dir/$1"; then
		echo "$ac_dir/$1"
		break
	fi
done