>> What is the exact syntax for (let-settings ...)?

> It's meant to be a general-purpose p-list analyzer.  If we can get keywords
> off the ground, it wouldn't be necessary.  The obvious implementation is
> going to be slow and involve mutation, both Bad Things.

I could really use keywords for the archive SRFIs. 167 & 168 could use
them. It'd be great to have them soon. Really the only thing left to
settle is if and how to support future hygienic keywords.