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About setf extensions
From: |
Xue Fuqiao |
Subject: |
About setf extensions |
Date: |
Fri, 15 Feb 2013 21:07:36 +0800 |
In (info "(cl) Setf Extensions"):
Most of these have directly corresponding "set" functions, like
`use-local-map' for `current-local-map', or `goto-char' for
`point'. A few, like `point-min', expand to longer sequences of
code when they are used with `setf' (`(narrow-to-region x
(point-max))' in this case).
I don't understand the `point-min' example. What does the "x" mean
here? I know it is the START argument of `narrow-to-region', but where
is it from? And where will it be used? Thanks.
--
Best regards, Xue Fuqiao.
http://www.emacswiki.org/emacs/XueFuqiao
- About setf extensions,
Xue Fuqiao <=