setlocal
for /f "delims="  %%F in (b.txt) do (
	for /f "delims=" %%a in ("*.tmp") do (  type "%%F" "%%a"
))>>"%%F".txt
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for /f "delims=" %%F in (b.txt) do (dir /b/a-d "*%%F*.tmp">"%%F.txt")
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for /f "delims=" %%i in (b.txt) do (type *%%i*.tmp 2>nul>"%%i.txt")
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@echo off
cd /d "%~dp0"
for /f "delims=" %%i in (b.txt) do (
    REM %%i仅在for循环内部生效
    type *%%i*.tmp >"%%i.txt" 2>nul
)
REM for循环结束之后%%i就被销毁了
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