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master 41169b5534 2/2: Add new user option electric-quote-replace-consec

From: Lars Ingebrigtsen
Subject: master 41169b5534 2/2: Add new user option electric-quote-replace-consecutive
Date: Tue, 9 Aug 2022 14:44:14 -0400 (EDT)

branch: master
commit 41169b55340878120fdf695eb4ac1fcb2679e7b8
Author: Andrea Greselin <greselin.andrea@gmail.com>
Commit: Lars Ingebrigtsen <larsi@gnus.org>

    Add new user option electric-quote-replace-consecutive
    * lisp/electric.el (electric-quote-replace-consecutive): New user
    option (bug#57057).
    (electric-quote-post-self-insert-function): Use it.
 etc/NEWS         |  3 +++
 lisp/electric.el | 19 ++++++++++++++++---
 2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/etc/NEWS b/etc/NEWS
index 9e509bc56e..78f60d64cd 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -375,6 +375,9 @@ option) and can be set to nil to disable Just-in-time Lock 
 * Changes in Emacs 29.1
+** New user option 'electric-quote-replace-consecutive'.
 ** Emacs is now capable of editing files with very long lines.
 The display of long lines has been optimized, and Emacs should no
diff --git a/lisp/electric.el b/lisp/electric.el
index 0cf3a299cf..f2ff837333 100644
--- a/lisp/electric.el
+++ b/lisp/electric.el
@@ -540,6 +540,16 @@ closing double quote otherwise."
   :version "26.1"
   :type 'boolean :safe #'booleanp :group 'electricity)
+(defcustom electric-quote-replace-consecutive t
+  "Non-nil means to replace a pair of single quotes with a double quote.
+Two single quotes are replaced by the corresponding double quote
+when the second quote of the pair is entered (i.e. by typing ` or
+') by default.  If nil, the single quotes are not altered."
+  :version "29.1"
+  :type 'boolean
+  :safe #'booleanp
+  :group 'electricity)
 (defvar electric-quote-inhibit-functions ()
   "List of functions that should inhibit electric quoting.
 When the variable `electric-quote-mode' is non-nil, Emacs will
@@ -592,7 +602,9 @@ This requotes when a quoting key is typed."
                               (memq (char-syntax (char-before))
                                     '(?\s ?\())))
                         (setq backtick ?\')))
-               (cond ((search-backward (string q< backtick) (- (point) 2) t)
+               (cond ((and electric-quote-replace-consecutive
+                           (search-backward
+                            (string q< backtick) (- (point) 2) t))
                       (replace-match (string q<<))
                       (when (and electric-pair-mode
                                  (eq (cdr-safe
@@ -606,7 +618,8 @@ This requotes when a quoting key is typed."
                      ((search-backward "\"" (1- (point)) t)
                       (replace-match (string q<<))
                       (setq last-command-event q<<)))
-             (cond ((search-backward (string q> ?') (- (point) 2) t)
+             (cond ((and electric-quote-replace-consecutive
+                         (search-backward (string q> ?') (- (point) 2) t))
                     (replace-match (string q>>))
                     (setq last-command-event q>>))
                    ((search-backward "'" (1- (point)) t)
@@ -627,7 +640,7 @@ and text paragraphs, and these are selectively controlled 
 Customize `electric-quote-chars' to use characters other than the
-ones listed here.
+ones listed here.  Also see `electric-quote-replace-consecutive'.
 This is a global minor mode.  To toggle the mode in a single buffer,
 use `electric-quote-local-mode'."

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