[Sbcl-devel] Package-local nicknames

[Paul K. <pv...@pv...>]

They are surprisingly easy to hack into a working prototype:

---
* (defpackage "FOO"
  (:use "CL")
  (:local-nicknames "X" "SB-EXT"))

(in-package "FOO")

#<PACKAGE "FOO">
* 
#<PACKAGE "FOO">
* 'x:cas

SB-EXT:CAS
---

The diff is tiny: each package comes with a (string=) alist of local nickname to global name, and read-token looks up in that plist when a package designator is tokenized.

Issues: what are the edge cases and how should they be handled?
In particular, what do we do with package redefinition?
Is that really the best syntax?

Please discuss (:

Paul Khuong