[GRASS-dev] [GRASS GIS] #3631: Mapset remains locked after switch to it and exit

[GRASS GIS]

#3631: Mapset remains locked after switch to it and exit
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 Reporter:  wenzeslaus                           |      Owner:  grass-dev@…
     Type:  defect                               |     Status:  assigned
 Priority:  normal                               |  Milestone:  7.6.0
Component:  Startup                              |    Version:  svn-trunk
 Keywords:  init, grass.py, lock, gislock,       |        CPU:  Unspecified
  g.mapset                                       |
 Platform:  Linux                                |
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 To reproduce:

 1. Start in mapset A.
 2. Switch to mapset B.
 3. Exit.
 4. Mapset B is still locked.

 The problem is that `grass.py` tries to remove the lock from A, but that
 was already removed. No warning or error is generated, because `grass.py`
 ''tries'' (`try_remove()`) and thus ignores any errors. This behavior
 seems to be there at least since 7.0 (by looking at the code).

 Influences:
 * G7:g.mapset
 * ''Settings > GRASS working environment > ...''
 * workspace loading with "session" (#3575)

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3631>
GRASS GIS <https://grass.osgeo.org>