plp626

总结了一下，做个备注。

@echo off 
for /f "delims=" %%a in (a.txt) do (
   set "var=%%a"
   setlocal enabledelayedexpansion
   set "var=!var:"=!"
      set "var=!var:&rdquo=!"&set "var=!var:&ldquo=!"
   echo !var!
   endlocal
)
pause

@echo off&set lf=^


for /f "delims=" %%a in (a.txt) do (
   set "var=%%a"
   setlocal enabledelayedexpansion
%换行符法%      set "var=!var:"=!"%lf%set "var=!var:&rdquo=!"&set "var=!var:&ldquo=!"
   echo !var!
   endlocal
)
pause


for /f "delims=" %%a in (a.txt) do (
   set "var=%%a"
   setlocal enabledelayedexpansion
%首引号转义法%      set ^"var=!var:"=!"&set "var=!var:&rdquo=!"&set "var=!var:&ldquo=!"
   echo !var!
   endlocal
)
pause


   set "quot=""
   for /f "delims=" %%a in (a.txt) do (
   set "var=%%a"
   setlocal enabledelayedexpansion
   for %%q in (!quot!)do (
%for变量法%       set "var=!var:%%q=!"&set "var=!var:&rdquo=!"&set "var=!var:&ldquo=!"
   )
   echo !var!
   endlocal
)
pause
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