vmsish - phpMan

NAME
    vmsish - Perl pragma to control VMS-specific language features

SYNOPSIS
        use vmsish;

        use vmsish 'status';        # or '$?'
        use vmsish 'exit';
        use vmsish 'time';

        use vmsish 'hushed';
        no vmsish 'hushed';
        vmsish::hushed($hush);

        use vmsish;
        no vmsish 'time';

DESCRIPTION
    If no import list is supplied, all possible VMS-specific features are
    assumed. Currently, there are four VMS-specific features available:
    'status' (a.k.a '$?'), 'exit', 'time' and 'hushed'.

    If you're not running VMS, this module does nothing.

    "vmsish status"
          This makes $? and "system" return the native VMS exit status
          instead of emulating the POSIX exit status.

    "vmsish exit"
          This makes "exit 1" produce a successful exit (with status
          SS$_NORMAL), instead of emulating UNIX exit(), which considers
          "exit 1" to indicate an error. As with the CRTL's exit() function,
          "exit 0" is also mapped to an exit status of SS$_NORMAL, and any
          other argument to exit() is used directly as Perl's exit status.

    "vmsish time"
          This makes all times relative to the local time zone, instead of
          the default of Universal Time (a.k.a Greenwich Mean Time, or GMT).

    "vmsish hushed"
          This suppresses printing of VMS status messages to SYS$OUTPUT and
          SYS$ERROR if Perl terminates with an error status, and allows
          programs that are expecting "unix-style" Perl to avoid having to
          parse VMS error messages. It does not suppress any messages from
          Perl itself, just the messages generated by DCL after Perl exits.
          The DCL symbol $STATUS will still have the termination status, but
          with a high-order bit set:

          EXAMPLE: $ perl -e"exit 44;" Non-hushed error exit
          %SYSTEM-F-ABORT, abort DCL message $ show sym $STATUS $STATUS ==
          "%X0000002C"

              $ perl -e"use vmsish qw(hushed); exit 44;"   Hushed error exit
              $ show sym $STATUS
                $STATUS == "%X1000002C"

          The 'hushed' flag has a global scope during compilation: the
          exit() or die() commands that are compiled after 'vmsish hushed'
          will be hushed when they are executed. Doing a "no vmsish
          'hushed'" turns off the hushed flag.

          The status of the hushed flag also affects output of VMS error
          messages from compilation errors. Again, you still get the Perl
          error message (and the code in $STATUS)

          EXAMPLE: use vmsish 'hushed'; # turn on hushed flag use Carp; #
          Carp compiled hushed exit 44; # will be hushed croak('I die'); #
          will be hushed no vmsish 'hushed'; # turn off hushed flag exit 44;
          # will not be hushed croak('I die2'): # WILL be hushed, croak was
          compiled hushed

          You can also control the 'hushed' flag at run-time, using the
          built-in routine vmsish::hushed(). Without argument, it returns
          the hushed status. Since vmsish::hushed is built-in, you do not
          need to "use vmsish" to call it.

          EXAMPLE: if ($quiet_exit) { vmsish::hushed(1); } print
          "Sssshhhh...I'm hushed...\n" if vmsish::hushed(); exit 44;

          Note that an exit() or die() that is compiled 'hushed' because of
          "use vmsish" is not un-hushed by calling vmsish::hushed(0) at
          runtime.

          The messages from error exits from inside the Perl core are
          generally more serious, and are not suppressed.

    See "Perl Modules" in perlmod.