(last-sexp-print): New function.

(eval-last-sexp-1): Give printed text a `keymap' property and bind
<mouse-2> and <RET> in that map to a function printing the
unabbreviated value.

1 files changed, 28 insertions, 3 deletions

diff --git a/lisp/emacs-lisp/lisp-mode.el b/lisp/emacs-lisp/lisp-mode.el
index 252e35d33cb..093357c5b43 100644
--- a/lisp/emacs-lisp/lisp-mode.el
+++ b/lisp/emacs-lisp/lisp-mode.el
@@ -319,6 +319,18 @@ which see."
     (eval-last-sexp t)
     (terpri)))
 
+
+(defun last-sexp-print ()
+  (interactive)
+  (let ((value (get-text-property (point) 'printed-value)))
+    (when value
+      (let ((beg (previous-single-property-change (point) 'printed-value))
+            (end (next-single-char-property-change (point) 'printed-value))
+            (standard-output (current-buffer)))
+        (delete-region beg end)
+        (prin1 value)))))
+
+
 (defun eval-last-sexp-1 (eval-last-sexp-arg-internal)
   "Evaluate sexp before point; print value in minibuffer.
 With argument, print output into current buffer."
@@ -378,10 +390,23 @@ With argument, print output into current buffer."
                      (set-syntax-table stab))))))
       (let ((print-length eval-expression-print-length)
             (print-level eval-expression-print-level)
-            (start (point)))
+            (beg (point)))
         (prin1 value)
-        (when (bufferp standard-output)
-          (put-text-property start (point) 'printed-value value))))))
+        (when (and (bufferp standard-output)
+                   (or (not (null print-length))
+                       (not (null print-level))))
+          (let ((map (make-sparse-keymap))
+                (end (point)))
+            (define-key map "\C-m" 'last-sexp-print)
+            (define-key map [down-mouse-2] 'mouse-set-point)
+            (define-key map [mouse-2] 'last-sexp-print)
+            (add-text-properties
+             beg end 
+             `(printed-value ,value 
+                             mouse-face highlight 
+                             keymap ,map
+                             help-echo "RET, mouse-2: print unabbreviated"))))))))
+
 
 (defun eval-last-sexp (eval-last-sexp-arg-internal)
   "Evaluate sexp before point; print value in minibuffer.