Several details of code formatting are inconsistent at the moment.

The first step should be to document the desired style on the wiki; then we can clean up the main text by applying the documented style.

Here are some items I noticed repeatedly:

• template <class T, class U = T> struct Foo<T, U>
  • space between template <
  • no space in template specializations, Foo<T, U>
  • space around = in U = T
• f(a, b , c)
  • space after comma, not before
  • no space before the leading parenthesis in function call expressions
• Generally, spaces around binary operators except for comma.
• Space before leading parenthesis in control structures (for, while, if).
• No spaces between closing template brackets: Foo<Bar<T>>. I think there's a separate issue open for this already, but it should go into the style guide in any case.

I think many of those rules are fairly easy to check globally with grep, and so the cleanup shouldn't be terribly difficult or protracted.