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PyLinkNetworkCore: copy world.hooks before iterating
This fixes a race condition where the order of PRIVMSG handlers could be changed as 'load <plugin>' runs, causing the load command to be processed multiple times.
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@ -233,7 +233,7 @@ class PyLinkNetworkCore(structures.DeprecatedAttributesObject, structures.CamelC
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command, hook_cmd)
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# Iterate over registered hook functions, catching errors accordingly.
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for hook_pair in world.hooks[hook_cmd]:
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for hook_pair in world.hooks[hook_cmd].copy():
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hook_func = hook_pair[1]
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try:
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log.debug('(%s) Calling hook function %s from plugin "%s"', self.name,
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