Item10575: History view is broken when using HTML comment tags on first lines of a Wiki topic

First of all it was not very easy to find out in which situation this problem exactly appears. But I was able to reproduce it when creating a topic in the following way:

• Create a new Wiki topic and make sure you have selected a topic parent
• Switch to the FosWiki markup editor. Add the following text to the topic:

<!--
This is the first comment rule
-->

This is a normal rule!

-- Main.AdminUser - 30 Mar 2011

• Make sure the HTML comment tags are on the first lines of the topic.
• Save the topic
• Edit the topic the same topic and add the following text between the comments and “This is a normal…”:

%TOC%

---++!! Normal Rule
Another line of text.

• Check the “force new revision” check-box and save the topic.
• Re-edit the topic and change the following line from

--Main.AdminUser- 30 Mar 2011

to

--Main.OtherUser 30 Mar 2011

• Check the “force new revision” check-box and save the topic.
• Re-edit the topic.
• Add the following between %TOC%% and the header

  --++!! Normal Rule

  :

---
dasdsasdasda
---

• Check the “force new revision” checkbox and save the topic.
• Click on history. Only Revision 4, 2 and 1 are shown. Revision 3 is hidden. When viewing the HTML source of the history page, you will see that the HTML that is generated to display revision 3 is between HTML tags.

Although same problems also appear when creating a topic with other combinations of the Wiki markup rules, for now I only had the broken history view when using the HTML comment tags on the first lines of the a topic.

I also attached a screenplay video of this sample.

-- NathanSanders - 30 Mar 2011

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