gnu_legacy: with GNU, write foreground first, else background first.

[sylvestre]

Fixes:
sharkdp/lscolors#77

[sylvestre]

I will update lscolors and rust-coreutils after that

[fdncred]

I've been following the discussion on lscolors. This seems reasonable to me.

[sylvestre]

@fdncred thanks. Would it be possible to merge this PR and do a new release of this crate? thanks

[fdncred]

I'm fine with it. @sholderbach what do you think? do you have time to publish a release here?

[sholderbach]

Looks good!

I can take care of shipping the release later.

For Nushell/Reedline we would wait on the next lscolors release if we go for a minor version. Alternatively we could ship this as a patch release (API and overall design is constant, but the change in behavior could break tests for folks)

I would favor going with 0.50.0 for the release.

[sylvestre]

@sholderbach thanks!

[sylvestre]

@sholderbach sorry for the pressure but do you have an eta for the new release? thanks

[fdncred]

@sylvestre I'm trying to find someone else on the nushell team to do a release. Sorry it's taking so long.

[fdncred]

@sylvestre FYI - Kubouch was able to do a release for us. nu-ansi-term 0.50 is in crates.io now. We're kind of stuck now in nushell because we're waiting on a lscolors release to update to the latest nu-ansi-term, lol.

[sylvestre]

thanks!