--- Careful here: there may be ^C exceptions flying around, so we start
--- the new thread blocked (forkIO inherits block from the parent,
--- #1048), and unblock only while we execute the user's code. We
--- can't afford to lose the final putMVar, otherwise deadlock
--- ensues. (#1583, #1922, #1946)
+-- Careful here: there may be ^C exceptions flying around, so we start the new
+-- thread blocked (forkIO inherits block from the parent, #1048), and unblock
+-- only while we execute the user's code. We can't afford to lose the final
+-- putMVar, otherwise deadlock ensues. (#1583, #1922, #1946)