** Changed in: openlp
    Milestone: None => 2.9.1

** Changed in: openlp
       Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1751626

Title:
  -d flag is used in a very confusing way

Status in OpenLP:
  Fix Committed

Bug description:
  in the startup code the parameters accepted include --dev-version
  (-d).

  What's irritating is that it's not actually used there. The values are
  also not actually passed along somewhere else.

  However the about dialog still correctly displays the bzr revision if
  started with -d.

  So a little searching showed the following. The argument is defined in
  openlp.core.app.parse_options but only used in
  openlp.core.version.get_version

  Since the dev_version is not stored somewhere or passed to some place,
  get_version actually checks sys.argv searching for "-d" or "--dev-
  version"

  This is not very nice to people reading the code. It very much looks
  like the argument definition is not actually used.

  My request:
  * either completely remove the functionality
  * or properly use the parsed value, so it's clear it actually does something.

  also having the bzr check code in openlp.core.version.get_version is
  probably not the best idea. Especially since the code includes a
  comment that it's a duplicate of code in setup.py

  Further rants:
  in setup.py the code is not actually exactly the same, there are 
modifications and there is a comment that it is a duplicate of the no longer 
existing openlp.core.common.checkversions.py 

  This illustrates that comments are bad for the reason that they are
  often not updated when the code changes. This can lead to comments
  confusing more than helping.

  
  In short:
  Remove the flag, remove the code from get_version and only have it in setup.py
  The flag is only useful for people running from bzr so devs, which should 
know what they are running and even if they don't they should know how to get 
that information without reverting to the about tab.

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