How would the above be possible?  
  
I came across this edit and few similar ones before 
  
![enter image description here][1]


  [1]: https://i.sstatic.net/CCyB1.png  
   
I have seen edits where the editor makes changes to a code or something similar (cant find the post).  
  
I feel it should be rejected & that the edit should be first suggested as a comment. Only if the answerer wants it to be changed then only it should be edited by the answerer.  What your say on this?