>From 204cd23c06b73b6fc1f1a1f372027e8509f8022e Mon Sep 17 00:00:00 2001
From: Arash Esbati <address@hidden>
Date: Sat, 16 May 2015 18:13:06 +0200
Subject: [PATCH 1/3] Parse env's defined with `\lstnewenvironment'.

* style/listings.el ("listings"): Add support for parsing new
env's defined with `\lstnewenvironment' command.
---
 ChangeLog         |  5 +++++
 style/listings.el | 40 +++++++++++++++++++++++++++++++++++++++-
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 9be6aab..2c71ee2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2015-05-16  Arash Esbati  <address@hidden>
+
+	* style/listings.el ("listings"): Add support for parsing new
+	env's defined with `\lstnewenvironment' command.
+
 2015-05-08  Tassilo Horn  <address@hidden>
 
 	* tex.el (TeX-mode-syntax-table): Use paired delimiter syntax for
diff --git a/style/listings.el b/style/listings.el
index ace5c97..aa91b77 100644
--- a/style/listings.el
+++ b/style/listings.el
@@ -1,6 +1,6 @@
 ;;; listings.el --- AUCTeX style for `listings.sty'
 
-;; Copyright (C) 2004, 2005, 2009, 2013 Free Software Foundation, Inc.
+;; Copyright (C) 2004, 2005, 2009, 2013, 2015 Free Software Foundation, Inc.
 
 ;; Author: Ralf Angeli <address@hidden>
 ;; Maintainer: address@hidden
@@ -28,6 +28,9 @@
 
 ;; This file adds support for `listings.sty'.
 ;;
+;; May 2015: The style detects new environments defined with
+;; `\lstnewenvironment'.  Users need to invoke `C-c C-n' for this.
+;;
 ;; FIXME: Please make me more sophisticated!
 
 ;;; Code:
@@ -217,9 +220,44 @@
     ("multicolumn"))
   "Key=value options for listings macros and environments.")
 
+(defvar LaTeX-auto-listings-lstnewenvironment nil
+  "Temporary for parsing the arguments of `\\lstnewenvironment'
+from `listings' package.")
+
+(defvar LaTeX-listing-lstnewenvironment-regexp
+  `(,(concat "\\\\lstnewenvironment"
+	     "[ \t\n\r]*{\\([A-Za-z0-9]+\\)}%?"
+	     "[ \t\n\r]*\\[?\\([0-9]?\\)\\]?")
+    (1 2) LaTeX-auto-listings-lstnewenvironment)
+  "Matches the argument of `\\lstnewenvironment' from `listings.sty'.")
+
+(defun LaTeX-listings-auto-prepare ()
+  "Clear temporary variable from `listings.sty' before parsing."
+  (setq LaTeX-auto-listings-lstnewenvironment nil))
+
+(defun LaTeX-listings-auto-cleanup ()
+  "Process the parsed results of `\\lstnewenvironment'."
+  (dolist (env-args LaTeX-auto-listings-lstnewenvironment)
+    (let ((env  (car env-args))
+	  (args (cadr env-args)))
+      (if (string-equal args "")
+	  (add-to-list 'LaTeX-auto-environment (list env))
+	(add-to-list 'LaTeX-auto-environment
+		     (list env (string-to-number args))))
+      (add-to-list 'LaTeX-indent-environment-list `(,env current-indentation))
+      (add-to-list 'LaTeX-verbatim-environments-local env))))
+
+(add-hook 'TeX-auto-prepare-hook #'LaTeX-listings-auto-prepare t)
+(add-hook 'TeX-auto-cleanup-hook #'LaTeX-listings-auto-cleanup t)
+(add-hook 'TeX-update-style-hook #'TeX-auto-parse t)
+
 (TeX-add-style-hook
  "listings"
  (lambda ()
+
+   ;; Add it to the parser
+   (TeX-auto-add-regexp LaTeX-listing-lstnewenvironment-regexp)
+
    ;; New symbols
    (TeX-add-symbols
     '("lstalias" ["Alias dialect"] "Alias" ["Dialect"] "Language")
-- 
2.4.1