> I've implemented srfi-177 on Gauche using er-macro, but then I found a bug
> in Gauche
> (there was unhygienic code in our internal handling of keyword lambda-list
> expansion) so
> it doesn't work with the current release version of Gauche.
> If I make a new release of Gauche, I'll PR my er-macro version.

Wow, thanks for your effort!

I really hope we can reach an agreement on 177 that also offers a smooth
upgrade path to R7RS-large. It would be great to start using keywords in
portable code right away, and optimize the syntax and compilers in the
coming years.