bbcode and /n

[Robert9]

I have added an easy bbcode like:

[test
replaced with <div class=test ...

I have added a button.

In my message form field I press the button; the result is:

test][/test

Now I copy a text between the two bbcodes.
The result is

test]
text
[/test

But the result should be:

test]text[/test

What can I do to have the result that I want? I don't like to correct this problem two times every time I use the bbcode.
bbcode and /n

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