zlacker

Which is what I do (add a space before and after). I didn't know you weren't supposed to put the spaces until someone pointed it out to me — suggested I was not an LLM because I added the spaces.

Makes me wonder if kerning is done correctly, if the em-dash would look like there were spaces before and after when there were not.

>>JKCalh+(OP)
Not at all, no. Here's a few historical examples:

1903 edition of The Wizard of Oz — https://archive.org/details/newwizardofoz00baum/page/2/mode/...

A page from Life magazine, 1894 — https://archive.org/details/sim_life_1894-08-23_24_608/page/...

The Illustrated London News, 1843 — https://archive.org/details/illustrated-london-news-v002-184...

The em dash pretty much just joins the two glyphs together. It's supposed to look that way.