(tex-font-lock-keywords-2): Fix bug in \bf fontification.

diff --git a/lisp/textmodes/tex-mode.el b/lisp/textmodes/tex-mode.el
index 3623c78888243f3fd86c634b50a3daa9315a6562..adb5f9c902b0fc77b41a80ccd104da04cb9a9429 100644 (file)
--- a/lisp/textmodes/tex-mode.el
+++ b/lisp/textmodes/tex-mode.el
@@ -576,7 +576,7 @@ An alternative value is \" . \", if you use a font with a narrow period."
              2 '(tex-font-lock-append-prop 'italic) 'append)
        ;; This is separate from the previous one because of cases like
        ;; {\em foo {\bf bar} bla} where both match.
-       (list (concat "\\\\\\(bf\\(series\\)?\\)\\>" args)
+       (list (concat "\\\\\\(bf\\(?:series\\)?\\)\\>" args)
              3 '(tex-font-lock-append-prop 'bold) 'append)))))
    "Gaudy expressions to highlight in TeX modes.")