Debugging GNU Emacs
-Copyright (C) 1985, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
- 2008, 2009, 2010 Free Software Foundation, Inc.
+Copyright (C) 1985, 2000-2012 Free Software Foundation, Inc.
See the end of the file for license conditions.
the data being used in the loop and try to determine why the loop does
not exit when it should.
+You can also trying sending Emacs SIGUSR2, which, if `debug-on-event'
+has its default value, will cause Emacs to attempt to break it out of
+its current loop and into the Lisp debugger. This feature is useful
+when a C-level debugger is not conveniently available.
+
** If certain operations in Emacs are slower than they used to be, here
is some advice for how to find out why.
paragraph-separate: "[ \f]*$"
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