Highlight the function name, not the module name, in declarations.

For example, the code:

function Base.getindex{T,S}(x::ArraySplit{T,S,Nothing}, i::Int)
    (i >= 1 && i <= x.k) || throw(BoundsError())
    copy!(x.buf, 1, x.s, (i-1)*(x.n-x.noverlap) + 1, x.n)
end