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master 82de8ec 1/2: Make delete-pair only delete pairs that are part of
From: |
Lars Ingebrigtsen |
Subject: |
master 82de8ec 1/2: Make delete-pair only delete pairs that are part of insert-pair-alist |
Date: |
Thu, 17 Sep 2020 11:03:00 -0400 (EDT) |
branch: master
commit 82de8ecc080d91dd05f2432d2d07feb2955aeec4
Author: martin rudalics <rudalics@gmx.at>
Commit: Lars Ingebrigtsen <larsi@gnus.org>
Make delete-pair only delete pairs that are part of insert-pair-alist
* lisp/emacs-lisp/lisp.el (delete-pair): Only delete pairs that
are part of `insert-pair-alist' (bug#4136).
---
lisp/emacs-lisp/lisp.el | 37 +++++++++++++++++++++++++++++++------
1 file changed, 31 insertions(+), 6 deletions(-)
diff --git a/lisp/emacs-lisp/lisp.el b/lisp/emacs-lisp/lisp.el
index 8c18557..ac4ba78 100644
--- a/lisp/emacs-lisp/lisp.el
+++ b/lisp/emacs-lisp/lisp.el
@@ -735,12 +735,37 @@ This command assumes point is not in a string or comment."
(insert-pair arg ?\( ?\)))
(defun delete-pair (&optional arg)
- "Delete a pair of characters enclosing ARG sexps following point.
-A negative ARG deletes a pair of characters around preceding ARG sexps."
- (interactive "p")
- (unless arg (setq arg 1))
- (save-excursion (forward-sexp arg) (delete-char (if (> arg 0) -1 1)))
- (delete-char (if (> arg 0) 1 -1)))
+ "Delete a pair of characters enclosing ARG sexps that follow point.
+A negative ARG deletes a pair around the preceding ARG sexps instead."
+ (interactive "P")
+ (if arg
+ (setq arg (prefix-numeric-value arg))
+ (setq arg 1))
+ (if (< arg 0)
+ (save-excursion
+ (skip-chars-backward " \t")
+ (save-excursion
+ (let ((close-char (char-before)))
+ (forward-sexp arg)
+ (unless (member (list (char-after) close-char)
+ (mapcar (lambda (p)
+ (if (= (length p) 3) (cdr p) p))
+ insert-pair-alist))
+ (error "Not after matching pair"))
+ (delete-char 1)))
+ (delete-char -1))
+ (save-excursion
+ (skip-chars-forward " \t")
+ (save-excursion
+ (let ((open-char (char-after)))
+ (forward-sexp arg)
+ (unless (member (list open-char (char-before))
+ (mapcar (lambda (p)
+ (if (= (length p) 3) (cdr p) p))
+ insert-pair-alist))
+ (error "Not before matching pair"))
+ (delete-char -1)))
+ (delete-char 1))))
(defun raise-sexp (&optional arg)
"Raise ARG sexps higher up the tree."