@c -*-texinfo-*-
@c This is part of the GNU Emacs Lisp Reference Manual.
-@c Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2001, 2002,
-@c 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+@c Copyright (C) 1990-1995, 1998-1999, 2001-2011 Free Software Foundation, Inc.
@c See the file elisp.texi for copying conditions.
@setfilename ../../info/control
@node Control Structures, Variables, Evaluation, Top
@subsection Examples of @code{catch} and @code{throw}
One way to use @code{catch} and @code{throw} is to exit from a doubly
-nested loop. (In most languages, this would be done with a ``go to.'')
+nested loop. (In most languages, this would be done with a ``goto.'')
Here we compute @code{(foo @var{i} @var{j})} for @var{i} and @var{j}
varying from 0 to 9:
If @var{var} is @code{nil}, that means no variable is bound. Then the
error symbol and associated data are not available to the handler.
+
+@cindex rethrow a signal
+Sometimes it is necessary to re-throw a signal caught by
+@code{condition-case}, for some outer-level handler to catch. Here's
+how to do that:
+
+@smallexample
+ (signal (car err) (cdr err))
+@end smallexample
+
+@noindent
+where @code{err} is the error description variable, the first argument
+to @code{condition-case} whose error condition you want to re-throw.
+@xref{Definition of signal}.
@end defspec
-@defun error-message-string error-description
+@defun error-message-string error-descriptor
This function returns the error message string for a given error
descriptor. It is useful if you want to handle an error by printing the
usual error message for that error. @xref{Definition of signal}.
@end smallexample
@end defmac
+
@node Error Symbols
@subsubsection Error Symbols and Condition Names
@cindex error symbol
@code{ftp-setup-buffer} returns but before the variable @code{process} is
set, the process will not be killed. There is no easy way to fix this bug,
but at least it is very unlikely.
-
-@ignore
- arch-tag: 8abc30d4-4d3a-47f9-b908-e9e971c18c6d
-@end ignore