[GHC] #8809: Prettier error messages?

[GHC]

#8809: Prettier error messages?
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        Reporter:  joelteon          |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.9
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
  #8809,#10073,#10179                |
       Wiki Page:                    |
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Changes (by Phyx-):

 * cc: Phyx- (added)


Comment:

 This looks nice, I don't know what the plans are, but I'd love for us to
 stop diverging on Windows support for stuff like this (VT100 escape
 sequences are supported fine on Windows 10 builds 10586 and later, or any
 console with ANSICON, ConEMU or xterm such as the standard MSYS2 console).
 I can help with the detection if you don't know how. I'll also be pushing
 an update to the `Win32` package which adds a function
 `isVT100ConsoleSupported`. The definition can be in-lined and used.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8809#comment:32>
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