[GHC] #4148: improve new recursive do syntax

[GHC]

#4148: improve new recursive do syntax
---------------------------------+------------------------------------------
    Reporter:  guest             |       Owner:                  
        Type:  feature request   |      Status:  patch           
    Priority:  low               |   Milestone:  7.6.1           
   Component:  Compiler          |     Version:  6.12.3          
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown    
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:                    |  
---------------------------------+------------------------------------------

Comment(by simonpj):

 Levent: Thanks.  I'd forgotten that the `mdo` keyword etc was still there;
 splendid.  As you say, quite easy.

 I think Ross is right about the documentation. What do you think?

 Last issue: do we really want two flags?  I think not.

    '''Proposal'''.  I suggest we deprecate `DoRec` in favour of the (less-
 cryptic) `RecursiveDo`.

 For now they can be synonymous.  (I know that previously we deprecated
 `RecursiveDo` in favour of `DoRec` but we really have changed course
 here.)  Anyone disagree?

 Simon

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4148#comment:27>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler