Batch file: How to replace “=” (equal signs) and a string variable?

Question

Besides SED, how can an equal sign be replaced? And how can I use a string variable in string replacement?

Consider this example:

For /F \"tokens=*\"         


        

Answer 1

Why not use Edlin? I could not find a way to do this with one initial file and no errors from Edlin, but just ignore them with NUL:. Strangly, the TYPE %0 includes the whole file even if there's an end of file character between the = and !, using TYPE on the batch file after it has run will not work the same way.

@ECHO OFF
GOTO skip
1,1r=!
e
:skip

SET "new==old============="

ECHO %new% > %TEMP%\var.tmp
TYPE %0 > %TEMP%\edlin.tmp

EDLIN %TEMP%\var.tmp < %TEMP%\edlin.tmp > NUL:

SET /P newnew=<%TEMP%\VAR.TMP
ECHO %newnew%

ERASE %TEMP%\VAR.TMP
ERASE %TEMP%\VAR.BAK
ERASE %TEMP%\edlin.tmp