Hello David,
> We have \gset to set some parameters, but not ones in the environment,
> so I fixed this with a new analogous command, \gsetenv. I considered
> refactoring SetVariable to include environment variables, but for a
> first cut, I just made a separate function and an extra if.
My 0.02€: ISTM that you do not really need that, it can already be
achieved with gset, so I would not bother to add a gsetenv.
sh> psql
SELECT 'Calvin' AS foo \gset
\setenv FOO :foo
\! echo $FOO
Calvin
--
Fabien.