[AUCTeX] Inserting {\cal A} instead of \mathcal{A}

[Yevgeniy Makarov]

Hello,

I am using AUCTeX to edit a chapter which is included in the main 
document. The chapter file has the following comment in the end:

%%% Local Variables:
%%% mode: latex
%%% TeX-master: "main"
%%% End:

However, when I type `cA to insert \mathcal{A}, AUCTeX inserts {\cal A}. 
I understand that this happens because it does not recognize that I am 
using LaTeX2e. However, the first line in main.tex is 
\documentclass[oneside]{report}. Still, when I look up TeX-active-styles 
variable in the chapter buffer it says

TeX-active-styles's value is ("intro" "LATEX")

Local in buffer intro.tex; global value is nil



In the main file, TeX-active-styles contains "latex2e".

Thanks in advance for any help.

Emacs  : GNU Emacs 21.4.1 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2005-09-28 on wink
Package: 11.83

current state:
==============
(setq
 AUCTeX-date "2006-06-07"
 window-system 'x
 LaTeX-version "2e"
 TeX-style-path '("style" "auto" 
"/u/emakarov/research/my/bibliography/style"
		  "/u/emakarov/tex/inputs/style" 
"/u/emakarov/research/my/bibliography/auto"
                  "/u/emakarov/tex/inputs/auto" "/u/emakarov/emacs/auctex/style"
                  "/u/emakarov/var/auctex")
 TeX-auto-save t
 TeX-parse-self t
 TeX-master "main"
 TeX-command-list '(("TeX" "%(PDF)%(tex) %S%(PDFout) \"%(mode)\\input 
%t\"" TeX-run-TeX nil
                     (plain-tex-mode ams-tex-mode texinfo-mode) :help "Run plain 
TeX")
		    ("LaTeX" "%l \"%(mode)\\input{%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)\\input %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")
                    ("View" "%v " TeX-run-discard nil nil)
                    ("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"))
 )