Github user LosD commented on the issue:

    https://github.com/apache/metamodel/pull/165
  
    In the one I looked at (QueryPostProcessessDataContext.java), the actual 
changes were around 10-15 lines (a little more with the since-introduced 
JavaDoc), out of 175 lines changed total, in a 700 lines class. A quick glance 
seems to repeat those numbers for many other classes.
    
    Reformatting is fine.... For the method you're changing, even only for the 
lines around if it's a few lines in a larger method (of course those shouldn't 
exist... But they do 🙂) Anything else is just wasting the reviewers time on 
trying to find out what is actual changes, as well as making history traversal 
an even bigger pain. `?w=1` helps, but not much when lines gets broken up (as 
they do most of the time). The noise also makes it easier for problems to slip 
through, as it's _so_ easy to miss an actual change in what looks like yet 
another reformat.
    
    You can't even look for highlights, as a moved part will also be 
highlighted (this is with `?w=1`):
    
![image](https://user-images.githubusercontent.com/1282832/32292972-fb076e9a-bf41-11e7-836d-a9eabf501e22.png)
    
    I'll continue, but please don't do that again if you expect people to spend 
their spare time reviewing it.


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