repeated colnames in svy : tabulate output

[skolenik]

webuse nhanes2, clear
xtile h12 = height , n(12)
xtile bp12 = bpsystol + bpdiast  , n(12)
svy : tab h12 bp12, count se format(%12.0fc)
mat li e(b)
di colnumb(e(b), "p111")

Well there are two entries labeled `p111`. That is not great, and `colnumb()` is confused here. I suspect that Stata always does something by position, el(e(b), 1, (row-1)*(# of columns) + column) ), rather than by subscripting. But this is unsettling.

(In general, `svy tabulate` is the most hideous of estimation commands. And it is not even an estimation command without the `svy` prefix.)