[hooks selection optimization] prune hooks when multiple entities are concerned by a hm.call_hooks() (closes: #1672022) the idea is to make a first pass over all the hooks in the registry and to mark put some of them in a disabled list. The disabled hooks are the one which: * are disabled at the session level * have a match_rtype or an is_instance selector which does not match the rtype / etype of the relations / entities for which we are calling the hooks. This works because the repository calls the hooks grouped by rtype or by etype when using the entities or eids_to_from keyword arguments Only hooks with a simple selector or an AndSelector of simple selectors (is_instance and match_rtype) are considered for disabling.

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.. role:: raw-html(raw)

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   :format: html

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RSS driven

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----------

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RSS is a pretty useful technology that can be widely used on this

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site. Any set of data can be presented as RSS. You can then plug in

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an RSS reader into that and follow the site activity. For example :

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:raw-html:`<p><a class="reference"

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href="view?vid=rss&amp;rql=Any+X%2CM+WHERE+X+modification_date+M+ORDERBY+M+DESC+LIMIT+30"><img

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alt="rss" src="data/rss.png"> latest changes</a></p>`