Ævar Arnfjörð Bjarmason [off-list ref] writes:
I think nobody's doing such a "chained" build when building the docs for
a "real" release, and having mixed versions might be confusing, but for
the "local build" case from a development checkout it's arguably more
useful.
Well, when I prepare a cascade of maintenance releases for CVE, what
do you think is done? Yes, I do have "make distclean" in the loop
that iterates over the maint-$version branches, just to be extra
careful, but I shouldn't have to.