问批处理文件中的字符串替换(星号)？

EN

@echo off
setlocal EnableDelayedExpansion
rem replace all "*" with "."
set "replace=."
set "var=*One**two***three"

rem Add dummy char to accept also a star in front
set "var=#!var!"
:replaceLoop
for /F "tokens=1 delims=*" %%A in ("!var!") do (
  set "prefix=%%A"
  set "rest=!var:*%%A=!"
  if defined rest (
    set "rest=!REPLACE!!rest:~1!"
    set Again=1
  ) else set "Again="
  set "var=%%A!rest!"
)
if defined again goto :replaceLoop
set "var=!var:~1!"
echo !var!
exit /b

@echo off
set myvar=one two * four
set replacement=three

for /f "tokens=1,2 delims=*" %%a in ("%myvar%") do (
    set tmp1=%%a
    set tmp2=%%b

    echo %tmp1%%replacement%%tmp2%
)

@echo off
setlocal EnableDelayedExpansion

set old_str=**hello * world ** 
set oldchar=*
set newchar=$
set new_str=

>$1 (<nul,set/P=%old_str%)
For %%a in ($1) do set /A cnt=%%~za
>$2 (For /l %%a in (1 1 %cnt%) do <nul,set/P=µ)

For /f "tokens=3" %%a in ('"fc /b $2 $1|findstr :"') do (
    set /A dec=0x%%a
    %ComsPec% /c exit /b !dec!
    if "!=ExitCodeAscii!"=="%oldchar%" (
       set new_str=!new_str!%newchar%
      ) else (
       set new_str=!new_str!!=ExitCodeAscii!
      )
)
del $?
echo %old_str%
echo %new_str%
pause