> some of them spaced and extra long; apparently this publisher had a very “inflationary” style! It's pretty common to see a single em-dash for the comma-like

> some of them spaced and extra long; apparently this publisher had a very “inflationary” style! It's pretty common to see a single em-dash for the comma-like parenthetical usage (p6 etc.) and a double em-dash for the "someone's dialogue was interrupted and cut off" usage (p15). The "I'm redacting this name" usage (p11) often uses two em-dashes too, although Wodehouse('s typesetter) doesn't in this case.