Em Dashes in org-mode and the Nuances of Abbrev

Since I confessed my enjoyment of em dash in my writing last week, I started using them more freely. On a Mac, it’s Option Shift Hyphen, as Sasha would tell you. In Linux, it’s a bit more involved: Ctrl Shift U to bring up a search for Unicode number reference, and then the number for em dash: 2014. This is all good and well, but what about Emacs, where I write most of my text? Emacs comes with abbrev-mode, a powerful text-expanding option that automatically converts something like “om” to “org-mode”, or even “fox” to “The quick brown fox jumps over the lazy dog” if I wanted to. But the em dash is a bit more tricky. I could, if I wanted, create an abbreviation like “em” to simply expand to “—”. But this doesn’t make much sense. When converting org-mode to markdown (as I do when I post something), the built-in solution for Emacs’ markdown exporter is to convert --- (three dashes) to —, em dash — but this presents two annoyances. First, the built-in exporter would convert those to their…