[GHC] #13076: GHC panics can cause text-formatting changes from colorized error messages to linger

[GHC]

#13076: GHC panics can cause text-formatting changes from colorized error messages
to linger
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:
            Type:  bug               |               Status:  patch
        Priority:  high              |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #8809, #12785     |  Differential Rev(s):  Phab:D2932
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by Ben Gamari <ben@…>):

 In [changeset:"22845adcc51b40040b9d526c36d2d36edbb11dd7/ghc" 22845ad/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="22845adcc51b40040b9d526c36d2d36edbb11dd7"
 Fix terminal corruption bug and clean up SDoc interface.

 - Fix #13076 by wrapping `printDoc_` so that the terminal color is
   reset even if an exception occurs.

 - Add `printSDoc`, `printSDocLn`, and `bufLeftRenderSDoc` to keep `SDoc`
   values abstract (they are wrappers of `printDoc_`, `printDoc`, and
   `bufLeftRender` respectively).

 - Remove unused function: `printForAsm`

 Test Plan: manual

 Reviewers: RyanGlScott, austin, dfeuer, bgamari

 Reviewed By: dfeuer, bgamari

 Subscribers: dfeuer, mpickering, thomie

 Differential Revision: https://phabricator.haskell.org/D2932

 GHC Trac Issues: #13076
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13076#comment:3>
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