Remember to cover the basics, that is, what you expected to happen and

what in fact did happen.

Be sure to consult the FAQ section in the manual before submitting

a bug report.  In addition check if the bug is reproducable with an

up-to-date version of AUCTeX.  So please upgrade to the version

available from http://www.gnu.org/software/auctex/ if your

installation is older than the one available from the web site.

If the bug is triggered by a specific (La)TeX file, you should try

to produce a minimal sample file showing the problem and include it

in your report.

Your bug report will be posted to the AUCTeX bug reporting list.

------------------------------------------------------------------------

The effect is to generate the error message:

  Error running timer `font-latex-jit-lock-force-redisplay': (wrong-number-of-arguments (2 . 2) 3)

or drop into the debugger with debug-on-error set to t.

Contents of file foo.Rnw:

\documentclass[12pt]{article}

\begin{document}

\end{document}

%%% Local Variables:

%%% eval: (ess-noweb-mode t)

%%% End:

Actions:

Position the cursor anywhere in the file.

Run the command "LaTeX-section".

Type a level or no level at all, and press enter.

Type a title or no title at all, and press enter.

Note: The "Rnw" file type makes the major mode be LaTeX and adds the polymode for Rnw minor mode.  The motivation for turning on the ess-noweb-mode minor mode is to obtain the default bindings for knitr-ing and then pdflatex-ing the document.

Emacs  : GNU Emacs 24.4.1 (i686-pc-mingw32)

of 2014-10-24 on LEG570

Package: 11.88.3

current state:

==============

(setq

AUCTeX-date "2015-03-22"

window-system 'w32

LaTeX-version "2e"

TeX-style-path '("~/.emacs.d/auctex" "c:/Users/bourgm1/.emacs.d/elpa/auctex-11.88.3/style"

                                  "c:/Users/bourgm1/.emacs.d/auctex/auto" "c:/Users/bourgm1/.emacs.d/auctex/style" "auto" "style")

TeX-auto-save nil

TeX-parse-self nil

TeX-master t

TeX-command-list '(("TeX" "%(PDF)%(tex) %`%S%(PDFout)%(mode)%' %t" TeX-run-TeX nil

                                     (plain-tex-mode ams-tex-mode texinfo-mode) :help "Run plain TeX")

                                    ("LaTeX" "%`%l%(mode)%' %t" TeX-run-TeX nil (latex-mode doctex-mode) :help "Run LaTeX")

                                    ("Makeinfo" "makeinfo %t" TeX-run-compile nil (texinfo-mode) :help

                                     "Run Makeinfo with Info output")

                                    ("Makeinfo HTML" "makeinfo --html %t" TeX-run-compile nil (texinfo-mode) :help

                                     "Run Makeinfo with HTML output")

                                    ("AmSTeX" "%(PDF)amstex %`%S%(PDFout)%(mode)%' %t" TeX-run-TeX nil (ams-tex-mode) :help

                                     "Run AMSTeX")

                                    ("ConTeXt" "texexec --once --texutil %(execopts)%t" TeX-run-TeX nil (context-mode) :help

                                     "Run ConTeXt once")

                                    ("ConTeXt Full" "texexec %(execopts)%t" TeX-run-TeX nil (context-mode) :help

                                     "Run ConTeXt until completion")

                                    ("BibTeX" "bibtex %s" TeX-run-BibTeX nil t :help "Run BibTeX")

                                    ("Biber" "biber %s" TeX-run-Biber nil t :help "Run Biber")

                                    ("View" "%V" TeX-run-discard-or-function t t :help "Run Viewer")

                                    ("Print" "%p" TeX-run-command t t :help "Print the file")

                                    ("Queue" "%q" TeX-run-background nil t :help "View the printer queue" :visible

                                     TeX-queue-command)

                                    ("File" "%(o?)dvips %d -o %f " TeX-run-command t t :help "Generate PostScript file")

                                    ("Index" "makeindex %s" TeX-run-command nil t :help "Create index file")

                                    ("Check" "lacheck %s" TeX-run-compile nil (latex-mode) :help

                                     "Check LaTeX file for correctness")

                                    ("Spell" "(TeX-ispell-document \"\")" TeX-run-function nil t :help "Spell-check the document")

                                    ("Clean" "TeX-clean" TeX-run-function nil t :help "Delete generated intermediate files")

                                    ("Clean All" "(TeX-clean t)" TeX-run-function nil t :help

                                     "Delete generated intermediate and output files")

                                    ("Other" "" TeX-run-command t t :help "Run an arbitrary command"))

)