From: Mark Wooding <mdw@distorted.org.uk>
Date: Wed, 21 Oct 2015 23:46:28 +0000 (+0100)
Subject: mdw-base.lisp: Refactor `with-places' incompatibly.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/lisp/commitdiff_plain/171bb403b78e6868ee77250681b7c5adb0c85bd9?hp=171bb403b78e6868ee77250681b7c5adb0c85bd9

mdw-base.lisp: Refactor `with-places' incompatibly.

Now there are two macros.

  * `with-places' is a simple macro which does the hard work of
    capturing places with symbol-macros.

  * `with-places/gensyms' is a hairy nested-backquote macro helper which
    does the job of the old `with-places'.

Because of this split of responsibilities, no callers of these macros
have to mess with environments explicitly, which simplifies
`update-place' and `update-place-after' slightly.
---