Should markdown url smart paste be disabled if you're pasting onto an existing url?

[mjbvz]

1. In a md file:

http://example.com/1

http://example.com/2

2. Copy the first line http://example.com/1
3. Select all of http://example.com/2 and paste

Bug
This creates:

[http://example.com/2](http://example.com/1)

It seems unlikely that users would want this even though it is the consistent behavior