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+;;; nxml-util.el --- utility functions for nxml-*.el
+
+;; Copyright (C) 2003, 2007 Free Software Foundation, Inc.
+
+;; Author: James Clark
+;; Keywords: XML
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 3, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Commentary:
+
+;;; Code:
+
+(defun nxml-make-namespace (str)
+  "Return a symbol for the namespace URI STR.
+STR must be a string. If STR is the empty string, return nil.
+Otherwise, return the symbol whose name is STR prefixed with a colon."
+  (if (string-equal str "")
+      nil
+    (intern (concat ":" str))))
+
+(defun nxml-namespace-name (ns)
+  "Return the namespace URI corresponding to the symbol NS.
+This is the inverse of `nxml-make-namespace'."
+  (and ns (substring (symbol-name ns) 1)))
+
+(defconst nxml-xml-namespace-uri 
+  (nxml-make-namespace "http://www.w3.org/XML/1998/namespace"))
+
+(defconst nxml-xmlns-namespace-uri
+  (nxml-make-namespace "http://www.w3.org/2000/xmlns/"))
+
+(defmacro nxml-with-unmodifying-text-property-changes (&rest body)
+  "Evaluate BODY without any text property changes modifying the buffer.
+Any text properties changes happen as usual but the changes are not treated as
+modifications to the buffer."
+  (let ((modified (make-symbol "modified")))
+    `(let ((,modified (buffer-modified-p))
+	   (inhibit-read-only t)
+	   (inhibit-modification-hooks t)
+	   (buffer-undo-list t)
+	   (deactivate-mark nil)
+	   ;; Apparently these avoid file locking problems.
+	   (buffer-file-name nil)
+	   (buffer-file-truename nil))
+       (unwind-protect
+	   (progn ,@body)
+	 (unless ,modified
+	   (restore-buffer-modified-p nil))))))
+
+(put 'nxml-with-unmodifying-text-property-changes 'lisp-indent-function 0)
+(def-edebug-spec nxml-with-unmodifying-text-property-changes t)
+
+(defmacro nxml-with-invisible-motion (&rest body)
+  "Evaluate body without calling any point motion hooks."
+  `(let ((inhibit-point-motion-hooks t))
+     ,@body))
+
+(put 'nxml-with-invisible-motion 'lisp-indent-function 0)
+(def-edebug-spec nxml-with-invisible-motion t)
+
+(defun nxml-display-file-parse-error (err)
+  (let* ((filename (nth 1 err))
+	 (buffer (find-file-noselect filename))
+	 (pos (nth 2 err))
+	 (message (nth 3 err)))
+    (pop-to-buffer buffer)
+    ;; What's the right thing to do if the buffer's modified?
+    ;; The position in the saved file could be completely different.
+    (goto-char (if (buffer-modified-p) 1 pos))
+    (error "%s" message)))
+
+(defun nxml-signal-file-parse-error (file pos message &optional error-symbol)
+  (signal (or error-symbol 'nxml-file-parse-error)
+	  (list file pos message)))
+
+(put 'nxml-file-parse-error
+     'error-conditions
+     '(error nxml-file-parse-error))
+
+(put 'nxml-parse-file-error
+     'error-message
+     "Error parsing file")
+
+(provide 'nxml-util)
+
+;; arch-tag: 7d3b3af4-de2b-4410-bf67-94d64824324b
+;;; nxml-util.el ends here