From 822eddf41c060ea6db6887cccc42c21a8c5a7992 Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Fri, 4 Jul 1997 04:41:46 +0000
Subject: [PATCH] (tex-common-initialization): Set search-whitespace-regexp
 locally.

---
 lisp/textmodes/tex-mode.el | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lisp/textmodes/tex-mode.el b/lisp/textmodes/tex-mode.el
index 6ca1447a9f9..606205404e9 100644
--- a/lisp/textmodes/tex-mode.el
+++ b/lisp/textmodes/tex-mode.el
@@ -666,6 +666,9 @@ Entering SliTeX mode runs the hook `text-mode-hook', then the hook
 	(modify-syntax-entry ?~ " ")
 	(modify-syntax-entry ?' "w"))
     (set-syntax-table tex-mode-syntax-table))
+  ;; Regexp isearch should accept newline and formfeed as whitespace.
+  (make-local-variable 'search-whitespace-regexp)
+  (setq search-whitespace-regexp "[ \t\r\n\f]+")
   (make-local-variable 'paragraph-start)
   ;; A line containing just $$ is treated as a paragraph separator.
   (setq paragraph-start "[ \t]*$\\|[\f\\\\%]\\|[ \t]*\\$\\$")
-- 
2.39.2