--- tex-mode.el.orig	2014-05-06 10:44:16.000000000 +1000
+++ tex-mode.el	2014-11-13 07:41:23.523888672 +1100
@@ -1116,6 +1116,7 @@
   ;; 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]*\\(\\$\\$\\|"
 		"\\\\[][]\\|"
@@ -1137,7 +1138,7 @@
 					      "noindent" "newpage" "footnote"
 					      "marginpar" "parbox" "caption"))
 		"\\|\\$\\$\\|[a-z]*\\(space\\|skip\\|page[a-z]*\\)"
-		"\\>\\)[ \t]*\\($\\|%\\)\\)"))
+		"\\>\\)[][0-9 \t]*\\($\\|%\\)\\)"))
   (set (make-local-variable 'imenu-create-index-function)
        'latex-imenu-create-index)
   (set (make-local-variable 'tex-face-alist) tex-latex-face-alist)