[GHC] #9616: Incorrect numbers from HpcMarkup.markup_plugin

[GHC]

#9616: Incorrect numbers from HpcMarkup.markup_plugin
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              Reporter:  dfeuer      |            Owner:
                  Type:  bug         |           Status:  patch
              Priority:  normal      |        Milestone:
             Component:  Code        |          Version:  7.9
  Coverage                           |         Keywords:
            Resolution:              |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Easy (less than 1
  Unknown/Multiple                   |  hour)
       Type of failure:  Incorrect   |       Blocked By:
  result at runtime                  |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Changes (by dfeuer):

 * status:  new => patch


Comment:

 The patch I just attached should fix the 0 placement. It also uses
 `dropWhileEnd` now instead of `reverse . dropWhile ... . reverse`, and
 adds left padding in a somewhat saner manner in general.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9616#comment:1>
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