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-rw-r--r--lisp/emacs-lisp/lisp-mode.el11
1 files changed, 10 insertions, 1 deletions
diff --git a/lisp/emacs-lisp/lisp-mode.el b/lisp/emacs-lisp/lisp-mode.el
index 84841aea97b..d5588f3811f 100644
--- a/lisp/emacs-lisp/lisp-mode.el
+++ b/lisp/emacs-lisp/lisp-mode.el
@@ -443,6 +443,9 @@ if that value is non-nil.")
(defun eval-print-last-sexp ()
"Evaluate sexp before point; print value into current buffer.
+If `eval-expression-debug-on-error' is non-nil, which is the default,
+this command arranges for all errors to enter the debugger.
+
Note that printing the result is controlled by the variables
`eval-expression-print-length' and `eval-expression-print-level',
which see."
@@ -614,7 +617,10 @@ With argument, print output into current buffer."
(defun eval-last-sexp (eval-last-sexp-arg-internal)
"Evaluate sexp before point; print value in minibuffer.
-Interactively, with prefix argument, print output into current buffer."
+Interactively, with prefix argument, print output into current buffer.
+
+If `eval-expression-debug-on-error' is non-nil, which is the default,
+this command arranges for all errors to enter the debugger."
(interactive "P")
(if (null eval-expression-debug-on-error)
(eval-last-sexp-1 eval-last-sexp-arg-internal)
@@ -722,6 +728,9 @@ expression even if the variable already has some other value.
\(Normally `defvar' and `defcustom' do not alter the value if there
already is one.)
+If `eval-expression-debug-on-error' is non-nil, which is the default,
+this command arranges for all errors to enter the debugger.
+
With a prefix argument, instrument the code for Edebug.
If acting on a `defun' for FUNCTION, and the function was