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luanti/src/script
Beha 4d7f296717 Do not add group values of zero to group lists. (#8751)
This fixes an issue where when the engine looked up groups (for example,
in ABM node names), NodeDefManager's m_group_to_items would contain nodes
with a group value of zero, resulting in nodes with flammable = 0 being
burned by a fire mod with a group:flammable checking ABM.

It brings consistency to the behaviour described in the api
documentation, where zero and nil groups should be the same.
2019-08-07 10:48:04 +02:00
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