Item8225: PublishPlugin does not manipulate contexts for the enabled plugins

PublishPlugin does not set or clear the contexts that indicate which plugins are enabled.

For example, if a topic contains the following:

   * Set DISABLEDPLUGINS=InterwikiPlugin
The !InterwikiPlugin is %IF{"context InterwikiPluginEnabled" then="en" else="dis"}%abled

Wiki<nop>:InterWiki points to Wiki:InterWiki

...then it renders as ...

The InterwikiPlugin is disabled

Wiki:InterWiki points to Wiki:InterWiki

... as expected - but it publishes (incorrectly) as ...

The InterwikiPlugin is enabled

Wiki:InterWiki points to Wiki:InterWiki

---

Foswiki::Plugins::PublishPlugin::Publisher::publishTopic() has two ways of generating the correct environment for rendering the topic, depending on whether &Foswiki::Func::pushTopicContext is defined. If that function is not defined, then publishTopic() creates a new Foswiki session. That approach is slow, but it works. (This bug does not manifest if I comment out the push/popTopicContext-related code.)

-- MichaelTempest - 02 Aug 2009

As Crawford said on IRC, creating a new Foswiki session for every topic is wrong. Quite a number of changes are needed, in the right order, in order for all of this to work correctly.

-- MichaelTempest - 03 Aug 2009

I think I made this more complex than it needs to be....

-- CrawfordCurrie - 24 Mar 2011

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