apang

注册表文件不是特别大的话，可以试试纯批方案

@echo off
set "pth=%~dp0"
set "pth=%pth:~,-1%"
set "pth=%pth:\=\\%"
(for /f "delims=" %%a in ('find /n /v ""^<a.reg') do (
   set "str=%%a"
   setlocal enabledelayedexpansion
   set "str=!str:X:\\Program Files\\7-Zip=%pth%!"
   set "str=!str:*]=!"
   echo,!str!
   endlocal
))>b.reg
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