diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index fb28caeffbe..2fb013649a5 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2011-11-19  Andreas Schwab  <schwab@linux-m68k.org>
+
+	* progmodes/sh-script.el (sh-assignment-regexp): Add entry for
+	bash.
+
 2011-11-19  Juri Linkov  <juri@jurta.org>
 
 	* info.el (Info-hide-note-references): Add `:set' tag to `defcustom'
diff --git a/lisp/progmodes/sh-script.el b/lisp/progmodes/sh-script.el
index bca5c93e0a5..62ca2ce085f 100644
--- a/lisp/progmodes/sh-script.el
+++ b/lisp/progmodes/sh-script.el
@@ -567,6 +567,7 @@ This is buffer-local in every such buffer.")
   '((csh . "\\<\\([[:alnum:]_]+\\)\\(\\[.+\\]\\)?[ \t]*[-+*/%^]?=")
     ;; actually spaces are only supported in let/(( ... ))
     (ksh88 . "\\<\\([[:alnum:]_]+\\)\\(\\[.+\\]\\)?[ \t]*\\([-+*/%&|~^]\\|<<\\|>>\\)?=")
+    (bash . "\\<\\([[:alnum:]_]+\\)\\(\\[.+\\]\\)?\\+?=")
     (rc . "\\<\\([[:alnum:]_*]+\\)[ \t]*=")
     (sh . "\\<\\([[:alnum:]_]+\\)="))
   "Regexp for the variable name and what may follow in an assignment.