Hi!
This bug is very strange. Its looks like it append only on italian Wikisource, so I think that one of your common.js script of gadget cause the bug.
This bug is impradicable it might be caused by a change of execution order of two script, by example your common.js (or a gadget) and scripts of ProofreadPage.

ProofreadPage init header, footer and quality contents from the content of the main textbox in its JavaScript so you mustn't supposed that the header and footer content is removed from the textbox when you write a script because this removing may occur after your script execution.

The variables are not merged by JavaScript but directly by PHP in the function "onEditPageImportFormData" of ProofreadPage.body.php and I don't think there is a bug at this level because all Wikisources would be affected.

So, I think that the bug is maybe caused by:
- A script that make the initialization of textboxes fail (by example by changing main textbox content before execution of ProofreadPage).
- A script that make the fields empty on submitting.
- ...
Tpt


Date: Sat, 10 Nov 2012 17:09:04 +0100
From: alex.brollo@gmail.com
To: wikisource-l@lists.wikimedia.org
Subject: [Wikisource-l] Proofreading bug: Change not allowed

When proofreading pages in it.wikisource, we are plagued by this message: 

Change not allowed - You are not allowed to change the proofreading status of this page

Going back to failed page, we noted that:
1. quality level is reverted to 1;
2. anything stored into header has been lost;
3. proofreadpage_username is set to an empty string 

The bug is impredictable, it occurs with different frequencies to different users when trying to edit different pages. Something wrong seems to occur when building the page code merging variables, header, body and footer contents. We wrote an "emergency fixing script" but it can only be called after the edit turns out to be wrong.

Is something similar happening into any other wikisource project?  Can you give us a link to understand what's happening? And - where can we find the js script which merges variables-header-body-footer into page code to send it to the server?

Alex





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