Consider preserving LANG and LC_ environments

[Earnestly]

As far as I understand it, these environments are perhaps not as necessary under OpenBSD due to their UTF-8 only approach. But I find it necessary to often preserve them as there isn't a C.UTF-8 available yet from either glibc or musl.

Would it make sense for OpenDoas to preserve these environments?

[ericonr]

Oh, I was going to open an issue for this!

setenv { LANG=$LANG } in a config is enough for what I suppose are most of the "default" setups, but it's very possible that people use different values for each of the LC_* variables. The question is, does this warrant being exported by default, or should it be sysadmin policy?

Are there known state "corruptions" using LANG and/or LC_* env vars that could be considered security concerns?

[Tachi107]

As far as I know sudo also preserves (only) the LANG env var, and that's enough in most cases. If a user has a non-default set of LC_* variables than it probably means that it should also manually adapt doas.conf to its custom setup