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Diffstat (limited to 'doc/lispref/control.texi')
| -rw-r--r-- | doc/lispref/control.texi | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/lispref/control.texi b/doc/lispref/control.texi index a7b2b35f58a..4d00d27bd46 100644 --- a/doc/lispref/control.texi +++ b/doc/lispref/control.texi @@ -2841,6 +2841,19 @@ Test @var{condition} at macro-expansion time. If its value is non-@code{nil}, expand the macro to @var{then-form}, otherwise expand it to @var{else-forms} enclosed in a @code{progn}. @var{else-forms} may be empty. +@end defmac + +@defmac static-when condition body... +Test @var{condition} at macro-expansion time. If its value is +non-@code{nil}, expand the macro to evaluate all @var{body} forms +sequentially and return the value of the last one, or @code{nil} if there +are none. +@end defmac + +@defmac static-unless condition body... +Test @var{condition} at macro-expansion time. If its value is @code{nil}, +expand the macro to evaluate all @var{body} forms sequentially and return +the value of the last one, or @code{nil} if there are none. Here is an example of its use from CC Mode, which prevents a @code{defadvice} form being compiled in newer versions of Emacs: |