special_seqs.xr

UNIX下perl实现代码

    This is a test to see if I can do not only `$self' and `method()', but
    also `$self->method()' and `$self->{FIELDNAME}' and `$Foo <=> $Bar'
    without resorting to escape sequences. If I want to refer to the
    right-shift operator I can do something like `$x >> 3' or even `$y >>
    5'.

    Now for the grand finale of `$self->method()->{FIELDNAME} = {FOO=>BAR}'.
    And I also want to make sure that newlines work like this
    `$self->{FOOBAR} >> 3 and [$b => $a]->[$a <=> $b]'

    Of course I should still be able to do all this *with* escape sequences
    too: `$self->method()' and `$self->{FIELDNAME}' and `{FOO=>BAR}'.

    Dont forget `$self->method()->{FIELDNAME} = {FOO=>BAR}'.

    And make sure that `0' works too!

    Now, if I use << or >> as my delimiters, then I have to use whitespace.
    So things like `<$self-'method()>> and `<$self-'{FIELDNAME}>> wont end
    up doing what you might expect since the first > will still terminate
    the first < seen.

    Lets make sure these work for empty ones too, like and `>>' (just to be
    obnoxious)