From: Alan Mackenzie <acm@muc.de>
Date: Sun, 31 Dec 2023 11:02:50 +0000 (+0000)
Subject: CC Mode.  Preserve space syntax-table props in open strings
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=732227c8ba7e898a4868ccc48d950551916c84b2;p=emacs.git

CC Mode.  Preserve space syntax-table props in open strings

This fixes bug#68111, allowing, e.g., backward-kill-word to
work properly.

* lisp/progmodes/cc-mode.el (c-clear-string-fences): On an open
string which isn't followed by another string, remove the
syntax-table properties just from template delimiters rather
than setting the syntax-table properties of all the string to
punctuation.

(cherry picked from commit 91f316d293150c6d025c61949c24fc07136fb1fd)
---

diff --git a/lisp/progmodes/cc-mode.el b/lisp/progmodes/cc-mode.el
index 4842de15164..b4356c1c887 100644
--- a/lisp/progmodes/cc-mode.el
+++ b/lisp/progmodes/cc-mode.el
@@ -1377,8 +1377,14 @@ Note that the style variables are always made local to the buffer."
 		       (not (nth 3 s))
 		       (c-get-char-property (1- (point)) 'c-fl-syn-tab))
 		    (c-put-char-property pos 'syntax-table '(1))
-		    (c-put-char-properties (1+ pos) (c-point 'eol pos)
-					   'syntax-table '(1)))
+		    ;; Remove syntax-table text properties from template
+		    ;; delimiters.
+		    (c-clear-char-property-with-value
+		     (1+ pos) (c-point 'eol pos)
+		     'syntax-table c-<-as-paren-syntax)
+		    (c-clear-char-property-with-value
+		     (1+ pos) (c-point 'eol pos)
+		     'syntax-table c->-as-paren-syntax))
 		  (setq pos (point)))
 	      (setq pos (1+ pos)))))))))