Subject: Re: bug#25929: 25.2; map-delete doesn't delete permanently 1st alist elt

From: Stefan Monnier <[email-masked]>
Date: Wed, 22 Mar 2017 13:04:32 -0400

> I'm not quite sure what the objection to map-delete being a macro is...

The problem is how to make it extensible to user-defined types
via something like cl-generic.el (e.g. add support for avl-tree.el
without having to make map.el aware of avl-tree.el).

        Stefan