[GHC] #8544: Auto-Reference ticket-related branches in tickets

[GHC]

#8544: Auto-Reference ticket-related branches in tickets
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       Reporter:  nomeata           |             Owner:
           Type:  feature request   |            Status:  new
       Priority:  normal            |         Milestone:
      Component:  Trac & Git        |           Version:  7.6.3
       Keywords:                    |  Operating System:  Unknown/Multiple
   Architecture:  Unknown/Multiple  |   Type of failure:  None/Unknown
     Difficulty:  Unknown           |         Test Case:
     Blocked By:                    |          Blocking:
Related Tickets:                    |
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 This has two possible implementations (and both are useful and can
 complement each other):

 * Add a new field to the description „Related branch“. If for ticket #1234
 there is a branch matching `T1234` (usually something like `wip/T1234`),
 link it from there.
 * When such a branch is created or deleted, post a message to the ticket.
 This way subscribers know about a possible ongoing implementation, and can
 review it.

 These should link somewhere I believe
 `https://ghc.haskell.org/trac/ghc/log/ghc?rev=<branchname>` is the most
 useful link.

 If the link is part of the „branch created“ message, it will become
 dangling after the branch is closed (presumably because the feature was
 merged; then the actually commits, if they reference the bug, will be
 auto-linked). I don’t think this is a problem. But if that is a problem,
 only put the link in the “Related branches” field, and clear it when the
 branch is deleted.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8544>
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