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Mention a few more gv.el features in the lispref

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* doc/lispref/variables.texi (Adding Generalized Variables):
At least mention gv-define-expander and gv-letplace.
This commit is contained in:
Glenn Morris 2012-11-12 00:23:23 -08:00
parent adad6d8f27
commit a13e12f957
2 changed files with 13 additions and 6 deletions
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5
doc/lispref/ChangeLog
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@ -1,3 +1,8 @@
2012-11-12 Glenn Morris <rgm@gnu.org>
* variables.texi (Adding Generalized Variables):
At least mention gv-define-expander and gv-letplace.
2012-11-11 Glenn Morris <rgm@gnu.org>
* debugging.texi (Error Debugging): Mention debug-on-message.

14
doc/lispref/variables.texi
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@ -2133,12 +2133,14 @@ set. An example of using this macro is:
@end example
@end defmac
@c FIXME? Not sure what, if anything, to say about this.
@ignore
@defmac gv-define-expander name handler
This is the most general way to define a new @code{setf} expansion.
@end defmac
@end ignore
@findex gv-define-expander
@findex gv-letplace
@c FIXME? Not sure what or how much to say about these.
@c See cl.texi for an example of using gv-letplace.
For more control over the expansion, see the macro @code{gv-define-expander}.
The macro @code{gv-letplace} can be useful in defining macros that
perform similarly to @code{setf}; for example, the @code{incf} macro
of Common Lisp. Consult the source file @file{gv.el} for more details.
@cindex CL note---no @code{setf} functions
@quotation