Ævar Arnfjörð Bjarmason  [off-list ref] writes:

This series provides a more idiomatic set of run-command API helpers
to match our current use-cases for run_command_v_opt(). See v1[1] for
a more general overview.

Hmph...  I somehow thought that the concensus is rather try the
complete opposite approach shown by René's patch to lose the use of
run_command_v_opt() by replacing it with run_command(&args), with
args.v populated using strvec_pushl() and other strvec API
functions.

One of the reasons I would prefer to see us moving in that direction
was because the first iteration of this series was a good
demonstration of the relatively limited usefulness of _l_opt()
variant and also it seemed to be error prone to use it.