[vonunov]

How can "correct" have any meaning in style-preference territory? Chicago doesn't put spaces around dashes. AP does. Oxford follows Chicago, and the rest of the UK uses spaced en dashes instead. For typewriting -- and, by extension, typing -- this well-established convention appears (attested in Garner's Usage, if you're wondering). Chicago always spaces ellipses . . . and AP doesn't, no matter how ugly it looks next to a period. ... Who's correct?

I've seen some variation in such formatting/style from LLMs, so that can't be totally reliable. Doesn't need to be, though. LLMs tend to subject dashes to a distinct flavor of abuse:

- In all the places they don't belong; nearly all can be replaced with a comma, a period, or nothing at all, with no loss to style or tone

- In few of the places they might belong, and conspicuously absent whenever there's a parenthetical phrase to offset

- Obnoxiously dramatic, excessive, and pointless