@echo off
set add=我是拼接字符串
mshta "javascript:var s=clipboardData.getData('text');if(s)new ActiveXObject
('Scripting.FileSystemObject').GetStandardStream(1).Write(s);close();"|more >cliptemp.txt
for /f "delims=" %%a in (cliptemp.txt) do set "line=%add%%%a"
mshta vbscript:clipboardData.SetData("text","%line%")(window.close)
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