[AUCTeX] Patch on latex.el / LaTeX-mark-environment

[Vincent Belaïche]

Dear Ralf,

Sorry for the very very long delay: as far as I understood a patch is 
just a unified diff file between modified file and
latest version. I downloaded the latest latex.el version from the CVS 
Web interface (this is the version you have modified about 116 minutes ago.
And I made the difference file as follows: (../auctex.patch/latex.el is 
the modified one).
I had some hard time keeping it within 12 +lines.
Sorry for having been too lazy for installing CVS on my machine, and 
making things properly with the Emacs 'C-x v ='. I hope that the command 
line
"diff -u" result is usable without effort by you, otherwise please feel 
free to make me know.

BR,
  Vincent.
-------------------------- patch below ----------------------------------
diff -u latex.el ../auctex.patch/latex.el
--- latex.el    Thu Jul 17 20:21:41 2008
+++ ../auctex.patch/latex.el    Thu Jul 17 20:37:58 2008
@@ -3344,17 +3344,24 @@
    (or (= level 0)
    (error "Can't locate beginning of current environment"))))

-(defun LaTeX-mark-environment ()
+(defun LaTeX-mark-environment (&optional count)
  "Set mark to end of current environment and point to the matching begin.
+If passed a prefix argument COUNT, mark the outer environnment by COUNT 
levels.
+Example: if point is --!-- and COUNT=2, env1 is the marked environment.
+
+    \\begin{env1} \\begin{env2} --!-- \\begin{env2} \\begin{env1}
+
Will not work properly if there are unbalanced begin-end pairs in
comments and verbatim environments"
-  (interactive)
-  (let ((cur (point)))
-    (LaTeX-find-matching-end)
+  (interactive "p")
+  (unless count (seq count 1))
+  (let ( (cur (point)))
+    (unless (> count 0) (error "invalid prefix arg, expects a positive 
number"))
+    (dotimes (c count) (LaTeX-find-matching-end))
    (beginning-of-line 2)
    (set-mark (point))
    (goto-char cur)
-    (LaTeX-find-matching-begin)
+    (dotimes (c count) (LaTeX-find-matching-begin))
    (TeX-activate-region)))

(defun LaTeX-fill-environment (justify)