Some autocorrect software automatically converts two hyphens in a row into an emdash. I know that's how it worked in Microsoft Word and just verified it's doing

Some autocorrect software automatically converts two hyphens in a row into an emdash. I know that's how it worked in Microsoft Word and just verified it's doing that with Google Docs. So it's not like it's hard to include an emdash in your writing. Could be a tell for emails, though.