Argggh! Seeing “tell—tale sign” when it should be “tell-tale sign” is even worse! The point isn't to use punctuation, it's to use punctuation properly!

Have you ever noticed some people can't even use basic punctuation like question marks.

    Blot out, correct, insert, refine,
    Enlarge, diminish, interline;
    Be mindful, when Invention fails;
    To scratch your Head, and bite your Nails.

    Your poem finish'd, next your Care
    Is needful, to transcribe it fair.
    In modern Wit all printed Trash, is
    Set off with num'rous Breaks⸺and Dashes—

That's an intentional overcorrection for humor

"In protest, I wrote [1] a plugin to convert all hyphens in this blog to em—dashes. Even ones that really should just be hyphens."

Here's another one: "I can't be bothered to use em-dash?"

I totally agree!

When I was growing up, I saw plays also use it like this:

  The two are in a room.
  -- Some guy says this
  -- The other guy says that