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[Stephen Lyons <1222338@xxxxxxxxxxxxxxxxxx>]

It was stupidly late for me to be thinking about code!  But what was
unclear to me is: whether - as part of the code used for
TLuaInterpreter::centerview() where it calls TRoomDB::getRoom() and uses
the return value as a boolean one as part of an if() condition.  In the
case I was unsure about I wonder whether it is safe to an integer 'zero'
value (where the roomID is NOT a valid room) when the getRoom() function
is supposed to return a pointer to a TRoom class.  My uncertainty was
not reduced when I tried to find out more using the Stack Overflow
website.  It is quite possible that I have "grabbed the wrong end of the
stick" as it were and my knowledge of C++ is not as good as I would hope
(I'm coming from a C background) so please forgive me if I am in error
here.

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https://bugs.launchpad.net/bugs/1222338

Title:
  centerview() on a room ID that doesn't exist causes odd highlighting

Status in Mudlet the MUD client:
  New

Bug description:
  Attached is a screenshot of the map with centerview() on a valid room,
  and the next view of when centerview() is not on a valid room - some
  rooms and exits get "selected".

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