On 2014-10-25 12:34, "Charles C. Berry" writes: > Further, changing that regexp to > > "^[^%\n]*\\\\usepackage.*{biblatex}" > > and byte-compiling reftex-parse.el.gz seems to make the problem go away. The auctex developers have fixed the issue, which will be available in the next version of emacs (since reftex is bundled). In the meantime, they suggested to add the following in a configuration file: #+begin_src emacs-lisp (with-eval-after-load 'reftex-parse (defun reftex-using-biblatex-p () "Return non-nil if we are using biblatex rather than bibtex." (if (boundp 'TeX-active-styles) ;; the sophisticated AUCTeX way (member "biblatex" TeX-active-styles) ;; poor-man's check... (save-excursion (re-search-forward "^[^%\n]*?\\\\usepackage.*{biblatex}" nil t))))) #+end_src Best, Alan -- OpenPGP Key ID : 040D0A3B4ED2E5C7