If Command Extensions are enabled SETLOCAL changes as follows: SETLOCAL batch command now accepts optional arguments: ENABLEEXTENSIONS ...

If Command Extensions are enabled SETLOCAL changes as follows:    SETLOCAL batch command now accepts optional arguments:          ENABLEEXTENSIONS / DISABLEEXTENSIONS              enable or disable command processor extensions.  See              CMD /? for details.          ENABLEDELAYEDEXPANSION / DISABLEDELAYEDEXPANSION              enable or disable delayed environment variable              expansion.  See SET /? for details.  These modifications last until the matching ENDLOCAL command,  regardless of their setting prior to the SETLOCAL command.    The SETLOCAL command will set the ERRORLEVEL value if given  an argument.  It will be zero if one of the two valid arguments  is given and one otherwise.  You can use this in batch scripts  to determine if the extensions are available, using the following  technique:        VERIFY OTHER 2>nul      SETLOCAL ENABLEEXTENSIONS      IF ERRORLEVEL 1 echo Unable to enable extensions    This works because on old versions of CMD.EXE, SETLOCAL does NOT  set the ERRORLEVEL value. The VERIFY command with a bad argument  initializes the ERRORLEVEL value to a non-zero value.
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