Can be cleanly cherry-picked to 2.x versions

Thanks for sharing this. We'll see if we can get it reviewed soon.

Look at the patch ...

Appart from the fact that there should be two empty lines between class blocks, the patch smells ok to me. Thanks Ruslan!

Thanks David, I have updated the patch having added extra blank line.

Ready for integration

The main moodle.git repository has just been updated with latest weekly modifications. You may wish to rebase your PULL branches to simplify history and avoid any possible merge conflicts. This would also make integrator's life easier next week.

TIA and ciao

Thanks Ruslan, i've integrated that to 22, 23 and master

GRR.

This breaks 2.2:
Moodle 2.2.5+ (Build: 20120920) command line installation program
PHP Fatal error: Class 'plugininfo_base' not found in /Users/Shared/Jenkins/Home/git_repositories/MOODLE_22_STABLE/lib/pluginlib.php on line 1697
PHP Stack trace:
PHP 1.

() /Users/Shared/Jenkins/Home/git_repositories/MOODLE_22_STABLE/admin/cli/install.php:0
0.2458 36174024 2. require_once('/Users/Shared/Jenkins/Home/git_repositories/MOODLE_22_STABLE/lib/pluginlib.php') /Users/Shared/Jenkins/Home/git_repositories/MOODLE_22_STABLE/admin/cli/install.php:679

I've reverted the change to 2.2.

Lesson: please prepare/test your changes on all the branches to be integrated to..

Shall we keep it on 2.3 and master only?

pluginlib.php has been refactored for 2.3 as per the feedback I got from Tim Hunt on the organisation of the code. This feature is still doable in 2.2 too, although it must be implemented in a slightly modified. Anyway, my +1 to have this for 2.3 only, or even for master only.

Yep, lets just leave it for 2.3+master. Strictly speaking I suppose I shouldn't have done it for anything but master since its an improvement really :/

Test failed.

While I was looking for plugins with a setting page, I downloaded Adminer, Flavours and Welcome from the plugins database. The problem is that Adminer and Flavours have a settings page, but do not create a section from what I understood, therefore this error is raised:

Section error!

More information about this error

Debug info: 
Error code: sectionerror
Stack trace:
line 467 of /lib/setuplib.php: moodle_exception thrown
line 22 of /admin/settings.php: call to print_error()

We should probably hide the link when the section does not exist, so that users won't think their plugins settings are broken.

@Frédéric Hiding link is difficult as $ADMIN does not exist at the point when get_settings_url() is called... One option obviously is to remove settings link.

Hi Ruslan,

Are you able to come up with a solution? Otherwise we'll need to revert this.

I can only suggest to remove settings link, initialisation of whole navigation stuff just to determine if plugin added something to localplugin settings tree or not is too much I think.

On the other hand, this could happen with any plugin (non local) that adds something to some different settings tree rather than own. May be plugins developers should keep settings within the same plugin type tree rather than spreading them all over the shop?

Just to clarify what has happened. Adminer plugin has settings.php file, but it adds custom link item to 'server' settings tree instead of creating section within 'local_plugins'. So, on the attempt to display settings using typical approach, it complains that section is not defined.

We've agreed to address this in a seperate issue: MDL-35661 as it looks like it affects other plugin types too.

Note that I don't think we have a policy for this kind of thing, so I don't think the adminer plugin is doing anythign incorrect.

Passing, based on the new issue.

Congratulations, you've done it!

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Ruslan, I saw this issue because I had merge conflict with my issue.
Please look at the comment
http://tracker.moodle.org/browse/MDL-35260?focusedCommentId=180913#comment-180913

I will correct it myself in my branch. Just to let you know that it seems that you don't use local plugins settings correctly.