Function attributes indentation

[Joseph Myers]

On Fri, 15 Mar 2019, Yann Droneaud wrote:

> It seems 5 spaces is the winner, but I would feel better if there would
> be a rational behind this choice.

2 spaces would be the thing to choose based on what Emacs does.  (5 spaces 
was for parameters in old-style function definitions, maybe that's why 
some attributes use that.)

-- 
Joseph S. Myers
joseph@codesourcery.com