[GHC] #12394: broken (obsolete?) links to user guide

[GHC]

#12394: broken (obsolete?) links to user guide
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           Reporter:  j.waldmann     |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Documentation  |           Version:  8.0.1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 A lot of place (Haskell Wiki, etc., example: bottom of
 https://wiki.haskell.org/Language_Pragmas) have links like this

 https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/ghc-
 language-features.html

 which gives 404 now. Is there a systematic way of redirecting this?

 It seems not, because actual names did change, the correct link should now
 be

 https://downloads.haskell.org/~ghc/latest/docs/html/users_guide/lang.html

 The old name (URL) was just the section heading? Which seemed reasonable.
 The new one just looks like a file name.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12394>
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