> but the following seemed like a very easy way to achieve this.

Well, these are a handful more steps than just running

perl
COPIED CODE
__END__
[download]

As Corion pointed out you can even avoid the __END__ by typing C-z (C-c resp. Win).

But when posting I prefer __END__ because C&P easily works for the reader.

Even better this doesn't come anymore with your restriction of not using the single-quote in the code, because of your -E'...' delimiter.

The purpose of this thread was finding a way to avoid typing use feature ':all' to replicate -E

I think my 'alias' solution does it well for me locally to run -E code.

And when posting code here, I can still expand for easy reproducibility on readers side.

perl -Mfeature=:all
CODE
__END__
[download]