diff options
Diffstat (limited to 'lisp/emacs-lisp/lisp-mode.el')
| -rw-r--r-- | lisp/emacs-lisp/lisp-mode.el | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/lisp/emacs-lisp/lisp-mode.el b/lisp/emacs-lisp/lisp-mode.el index 85717408121..408774fbbf1 100644 --- a/lisp/emacs-lisp/lisp-mode.el +++ b/lisp/emacs-lisp/lisp-mode.el @@ -700,7 +700,8 @@ If CHAR is not a character, return nil." With argument, print output into current buffer." (let ((standard-output (if eval-last-sexp-arg-internal (current-buffer) t))) ;; Setup the lexical environment if lexical-binding is enabled. - (eval-last-sexp-print-value (eval (preceding-sexp) lexical-binding)))) + (eval-last-sexp-print-value + (eval (eval-sexp-add-defvars (preceding-sexp)) lexical-binding)))) (defun eval-last-sexp-print-value (value) @@ -728,6 +729,23 @@ With argument, print output into current buffer." (defvar eval-last-sexp-fake-value (make-symbol "t")) +(defun eval-sexp-add-defvars (exp &optional pos) + "Prepend EXP with all the `defvar's that precede it in the buffer. +POS specifies the starting position where EXP was found and defaults to point." + (if (not lexical-binding) + exp + (save-excursion + (unless pos (setq pos (point))) + (let ((vars ())) + (goto-char (point-min)) + (while (re-search-forward + "^(def\\(?:var\\|const\\|custom\\)[ \t\n]+\\([^; '()\n\t]+\\)" + pos t) + (let ((var (intern (match-string 1)))) + (unless (special-variable-p var) + (push var vars)))) + `(progn ,@(mapcar (lambda (v) `(defvar ,v)) vars) ,exp))))) + (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. |