[alpap]

Код:

@echo off
set "f=1.txt"
<"%f%">$ (
 for /f "delims=" %%a in ('more') do @(
  echo %%a|>nul findstr/ec:"== ))" && (
   for /f "tokens=1,2 delims=:" %%b in ("%%~a") do @(
    echo %%b::
    echo %%c
   )
  ) || (
   echo %%a
  )
 )
)& move $ "1.txt"
exit

.