Editor removes escape characters even if in a code block

[durden]

I think this is an issue with the new editor and loading data for editing a guide. A guide might have text that looks like an escape character but in a code block. For example:

abs(x) = \begin{dcases*}
        x & when `x \geq 0`\\
        -x & otherwise
        \end{dcases*}

The \begin starts with \b escape character, but it's not meant to be an escape character because it's in a code block. The editor allows you to type this text and save it. However, if we come back to this guide the editor strips the \b on load.

[durden]

@paulocheque Can you look into this?

Checkout this small example.

Notice how the text renders fine on the rendered markdown page (above link). Now, click the 'edit this guide' link to edit the guide. Notice how the \b is striped. This will result in changes to the original guide that the author did not intend.

I discovered this bug while testing with this real-world guide.

[durden]

Here's an example of a diff where the editor removed what look like escape characters even though my real changes only changed one line, the header of the 'Introduction' line.

[paulocheque]

I guess I find a good solution. I will make more tests and commit/deploy for tests.

[paulocheque]

We were facing JS escaping problems for all JS special chars: http://www.w3schools.com/js/js_strings.asp

So now, I am using textarea to load the initial content of the article. It is much simpler and clean.

I am testing all the JS special chars and also our last issues related to escaping in these tests:
http://guides-dev.herokuapp.com/write/draft/python/testing-escape/?branch=master
http://guides-dev.herokuapp.com/write/draft/python/testing-escape-2/?branch=master

But I would like to test more on real articles, so I will make a copy of some of the production articles to check.

[paulocheque]

More testing articles with your examples:

http://guides-dev.herokuapp.com/write/draft/python/guide-with-escape-characters/?branch=master
http://guides-dev.herokuapp.com/write/draft/python/functional-style-programming-using-c/?branch=master

[durden]

Looks fixed to me, thanks again!