patch 8.2.2450: MS-Windows: ADS was not preserved if 'backupcopy' is "yes" Commit: https://github.com/vim/vim/commit/7781ebe50f6d4daba02be3bd7e6ca08cd459674b Author: Bram Moolenaar <Bram@vim.org> Date: Mon Feb 1 20:35:01 2021 +0100 patch 8.2.2450: MS-Windows: ADS was not preserved if 'backupcopy' is "yes" Problem: MS-Windows: ADS was not preserved if 'backupcopy' is "yes". Solution: Copy ADS before truncating the file. (Ken Takata, closes https://github.com/vim/vim/issues/7762)