? 'foo' : 'bar';

    switch('x'){
      case 'y'              {print "y\n"}
      else                  {print "x\n"}
    }

    # ?

##</code><code>##

    if ($foo =~ ?bar?)

##</code><code>##

    my $x = 2 ? 'foo' : 'bar';

    switch('x'){
      case 'y'              {print "y\n"}
      else                  {print "x\n"}
    }

    # ?

##</code><code>##


    my

##</code><code>##

     $x

##</code><code>##

     =

##</code><code>##

     2

##</code><code>##

    ? 'foo' : 'bar';

    switch('x'){
      case 'y'              {print "y\n"}
      else                  {print "x\n"}
    }

    # ?

##</code><code>##

syntax error at t.pl line 9, near "){"
String found where operator expected at t.pl line 10, near "case 'y'"
        (Do you need to predeclare case?)
Execution of t.pl aborted due to compilation errors.