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Document force arg in unload-feature.

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Richard M. Stallman 1995-01-21 23:51:19 +00:00
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commit ee6bcc944a
1 changed files with 7 additions and 1 deletions
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8
lispref/loading.texi
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@ -515,12 +515,18 @@ with a call to @code{provide}. The order of the elements in the
reclaim memory for other Lisp objects. To do this, use the function
@code{unload-feature}:
@deffn Command unload-feature feature
@deffn Command unload-feature feature &optional force
This command unloads the library that provided feature @var{feature}.
It undefines all functions, macros, and variables defined in that
library with @code{defconst}, @code{defvar}, @code{defun},
@code{defmacro}, @code{defsubst} and @code{defalias}. It then restores
any autoloads formerly associated with those symbols.
Ordinarily, @code{unload-feature} refuses to unload a library on which
other loaded libraries depend. (A library @var{a} depends on library
@var{b} if @var{a} contains a @code{require} for @var{b}.) If the
optional argument @var{force} is non-@code{nil}, dependencies are
ignored and you can unload any library.
@end deffn
The @code{unload-feature} function is written in Lisp; its actions are