How to deal with clang-format

[Jack Ostroff via KMyMoney-devel]

I'm finding git requiring me to run clang-format on most code changes.   
Most of the time, it is fine - just fixing up bad indentation (tabs ->  
spaces) but sometimes it completely re-indents something in ways that  
make it actually harder to read, or using longer lines.   
https://community.kde.org/Policies/Frameworks_Coding_Style says you can  
use a comment at the end of a line to preserve manual line breaks, but  
I have a case where it still re-flows, putting ". //" on a line by  
itself.  Do we have a preference on how to handle this, or do we just  
let clang-format do its thing?

Related - is there a way to get emacs to use the required formatting  
style without having to explicitly run clang-format (either in emacs or  
command line) ?

Jack