Is this a bug? "ref" affects only first tuple element

[Henning Hasemann]

FYI: I found a workaround. It goes like this:

import std.traits;

/**
 * Given the types T create a delegate with return type int and
 * parameter
 * types ref T.
 * Example:
 *
 * TupleDelegate!(int, char[], void*) dg;
 *
 * is equivalent to:
 *
 * int delegate(ref int, ref char[], ref void*) dg;
 */
template TupleDelegate(T ...) {
  alias MkDelegate!(int delegate(), T) TupleDelegate;
}

/**
 * Helper for TupleDelegate.
 * Parameters:
 * D: accumulated delegate
 * A, B: Types to append to D's parameter list
 */
template MkDelegate(D, A, B ...) {
  alias MkDelegate!(int delegate(ParameterTypeTuple!(D), ref A), B) MkDelegate;
}

/**
 * Ditto
 */
template MkDelegate(D, A) {
  alias int delegate(ParameterTypeTuple!(D), ref A) MkDelegate;
}

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