ps redundancy

[Pierre Abbat]

I'm looking at the ps output of Lilypond ('cause I'm writing a completely 
unrelated program that also outputs ps) and see this:

/set-ps-scale-to-lily-scale {
        lily-output-units output-scale mul
        lily-output-units output-scale mul scale
} bind def

Couldn't you say

/set-ps-scale-to-lily-scale {
        lily-output-units output-scale mul dup scale
} bind def

?

Pierre