[GHC] #9540: words is not a good producer; unwords is not a good consumer (was: unwords is not a good producer)

[GHC]

#9540: words is not a good producer; unwords is not a good consumer
-------------------------------------+-------------------------------------
              Reporter:  dfeuer      |            Owner:
                  Type:  bug         |           Status:  patch
              Priority:  normal      |        Milestone:  7.10.1
             Component:  Compiler    |          Version:  7.9
            Resolution:              |         Keywords:  fusion
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Easy (less than 1
       Type of failure:  Runtime     |  hour)
  performance bug                    |       Blocked By:
             Test Case:              |  Related Tickets:
              Blocking:              |
Differential Revisions:  D375        |
-------------------------------------+-------------------------------------
Changes (by dfeuer):

 * status:  new => patch
 * differential:   => D375
 * milestone:   => 7.10.1


Comment:

 I've changed my mind; I think it probably (but not necessarily) makes more
 sense to make `unwords` be a good consumer and `words` a good producer, so
 they can play nice with each other. If I could make `unwords` both, that'd
 be the ideal, but we can at least go one way.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9540#comment:1>
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