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-rw-r--r--lisp/emacs-lisp/eieio-opt.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/emacs-lisp/eieio-opt.el b/lisp/emacs-lisp/eieio-opt.el
index e93d317d936..193f92bc2ce 100644
--- a/lisp/emacs-lisp/eieio-opt.el
+++ b/lisp/emacs-lisp/eieio-opt.el
@@ -327,7 +327,7 @@ current expansion depth."
(defun eieio-sb-expand (text class indent)
"For button TEXT, expand CLASS at the current location.
Argument INDENT is the depth of indentation."
- (cond ((string-match "+" text) ;we have to expand this file
+ (cond ((string-match "\\+" text) ;we have to expand this file
(speedbar-change-expand-button-char ?-)
(speedbar-with-writable
(save-excursion