Re: `thunk-let'?

[Eli Zaretskii]

> From: Michael Heerdegen <address@hidden>
> Cc: address@hidden,  address@hidden,  address@hidden
> Date: Sat, 11 Nov 2017 16:20:58 +0100
> 
> Ok, then `when-let*'.  It's surely useful not only in Emacs internals.
> Lot's of packages in Gnu Elpa use it.

Then it should be moved to subr.el or some other file.  And it should
be documented.

> FWIW, my impression was always that subr-x.el was thought as an extension
> library for subr.el, and for me, it kind of looks like that.

If that is the case, it makes no sense not to document what's in
there.