[Swift-devel] Code style

[Ben Clifford]

> > - spaces instead of hard tabs. I feel adamant about this.
> 
> Eclipse has some options where you can do both "keep as is" (for
> existing lines) and "use spaces for new stuff".

both of those at the same time is often terrible because of the ambiguity 
in how long a tab is. if you have some formatted code and you want to add 
lines to it, pretty much all you can do is use the same byte sequence for 
indents as has already been used to indent that same block, and then add 
additional whitespace on the end to get further depth.

(mmm tabs vs spaces debate)

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