itch.io

You could maybe do it like

#mfunc foreach(element, list) as "keyword" \
for (var element##_list = list, \
	element##_len = array_length(element##_list), \
	element##_i = 0, \
	element = element##_len ? element##_list[element##_i] : undefined; \
	element##_i < element##_len; \
	{ if (++element##_i < element##_len) element = element##_list[element##_i] } \
)

to also allow for

foreach (v, [1, 2, 3]) {
	trace(v);
}