[ET Trac] [Einstein Toolkit] #1842: clang-format options not valid for versions <=3.5

[Einstein Toolkit]

#1842: clang-format options not valid for versions <=3.5
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 Reporter:  knarf   |       Owner:                     
     Type:  defect  |      Status:  new                
 Priority:  unset   |   Milestone:                     
Component:  Cactus  |     Version:  development version
 Keywords:          |  
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 The current .clang-format file is not valid for clang-format versions 3.5
 and below. The attached patch would 'fix' this by removing key words not
 known in version 3.5, but still wouldn't work for versions below that. I
 do not suggest to apply the patch - it should just show that this is quite
 some number.

 Looking at the .clang-format file it seems that it does not use one of the
 pre-defined styles, but rather creates it's own (even if it is based on
 one given the comment in the file). I wonder if all of this is really
 necessary, or if we could not simply use one of the pre-defined styles,
 possibly with a few changes that work across clang-format versions.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1842>
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