hanyeguxing

@echo off&setlocal enableDelayedExpansion
for %%a in (*.html) do (
	set "n=%%~na"
	for %%b in ("!n:_=\!") do (
		set "n=%%~pb"
		set "n=!n:\=_!"
		ren "%%a" "!n:~1,-1!.txt"
))
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或：

@echo off&setlocal enableDelayedExpansion
for %%a in (*.html) do (
	set "n=%%~na"
	set "n=!n:.=$!"
	for %%b in ("!n:_=.!") do (
		set "n=%%~nb"
		set "n=!n:.=_!"
		ren "%%a" "!n:$=.!.txt"
))
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注意：$为文件名中没有的字符