Among a copy editor’s typographic tools is the useful trick known variously as the suspended hyphen, suspensive hyphen, dangling hyphen, hanging hyphen, and floating hyphen. It’s the first hyphen in phrases like sales- and service-related queries and sisters- and brothers-in-law. It helps ensure they’re not misread.
The suspended hyphen is not always deployed, and it’s seldom seen in casual writing, but it’s a moderately common device in edited prose. But I’ll wager you’ve rarely or never seen its extended cousin: the suspended en dash. Behold!
This is from Jonathan Lethem’s The Disappointment Artist: And Other Essays (Faber and Faber, 2005). Here’s the text of interest:
… requiring Talking Heads– or Elvis Costello–style ironies …
We’ll leave Talking Heads aside for now. They can chat among themselves. The en dash in Elvis Costello–style ironies is an editorial nicety often skipped. My guess is that most readers wouldn’t notice if it was a hyphen or a space instead, and some will be nonplussed by the dash if they notice it at all. So I’ll explain.
Posted by Stan Carey 
Sentence first 