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MUC: Skip adding to history when it's set to zero

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Optimizes away all the processing on every message in case the
end-result is zero history.
This commit is contained in:
Kim Alvefur 2021-07-19 17:07:59 +02:00
parent 07ef92dbd8
commit 20d3403a84
1 changed files with 4 additions and 0 deletions
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4
plugins/muc/history.lib.lua
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@ -173,6 +173,10 @@ end, 50); -- Before subject(20)
-- add to history
module:hook("muc-add-history", function(event)
local room = event.room
if get_historylength(room) == 0 then
room._history = nil;
return;
end
local history = room._history;
if not history then history = {}; room._history = history; end
local stanza = st.clone(event.stanza);