From 94b8153eaa78e376e6ed8c2b04602edf3dadc007 Mon Sep 17 00:00:00 2001
From: Kevin Ryde <user42_kevin@yahoo.com.au>
Date: Wed, 30 Oct 2019 22:32:45 +0100
Subject: [PATCH] Support \pagebreak[0] for paragraph-separate in latex-mode

* textmodes/tex-mode.el (latex-mode): In 'paragraph-separate' allow
optional argument ('[0]', etc.) for '\pagebreak[0]'.  (Bug#19039)
---
 lisp/textmodes/tex-mode.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lisp/textmodes/tex-mode.el b/lisp/textmodes/tex-mode.el
index 3d7cc62e265..9b92a2fc60e 100644
--- a/lisp/textmodes/tex-mode.el
+++ b/lisp/textmodes/tex-mode.el
@@ -1139,6 +1139,7 @@ subshell is initiated, `tex-shell-hook' is run."
   ;; A line containing just $$ is treated as a paragraph separator.
   ;; A line starting with $$ starts a paragraph,
   ;; but does not separate paragraphs if it has more stuff on it.
+  ;; For \pagebreak allow latex optional arg like \pagebreak[2]
   (setq paragraph-start
 	(concat "[ \t]*\\(\\$\\$\\|"
 		"\\\\[][]\\|"
@@ -1162,7 +1163,7 @@ subshell is initiated, `tex-shell-hook' is run."
 					      "noindent" "newpage" "footnote"
 					      "marginpar" "parbox" "caption"))
 		"\\|\\$\\$\\|[a-z]*\\(space\\|skip\\|page[a-z]*\\)"
-		"\\>\\)[ \t]*\\($\\|%\\)\\)"))
+		"\\>\\)[][0-9 \t]*\\($\\|%\\)\\)"))
   (setq-local imenu-create-index-function #'latex-imenu-create-index)
   (setq-local tex-face-alist tex-latex-face-alist)
   (add-hook 'fill-nobreak-predicate #'latex-fill-nobreak-predicate nil t)
-- 
2.39.5