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This is a new major mode for GNU Emacs for editing XML documents. It supports editing well-formed XML documents and also provides schema-sensitive editing of XML documents using RELAX NG Compact Syntax. To use this, you need GNU Emacs version 21.x, preferably 21.3. GNU Emacs version 20 will not work properly, nor will XEmacs. To get started, do M-x load-file <RET> rng-auto.el <RET> This defines the necessary autoloads. Now, visit a file containing an XML document, and do M-x nxml-mode Now do C-h m for information on how to use nxml-mode. The beginnings of a manual are in nxml-mode.info. You can read this using C-u M-x info RET nxml-mode.info RET It's also installed as an entry at the end of the top-level info directory. So you can read it with C-h i as usual. You can use test.valid.xml and test.invalid.xml as examples of valid and invalid XML documents. To get things automatically loaded each time you start Emacs, add (load "~/nxml-mode-200YMMDD/rng-auto.el") to your .emacs, where ~/nxml-mode-200YMMDD is the directory containing the .elc files. Note that rng-auto.el does not load all of the nxml-mode code; it merely sets things up so that all the features of nxml-mode will be autoloaded properly. You should not try to autoload rng-auto.el itself. To use nxml-mode automatically for files with an extension of xml, xsl, rng or xhtml, add (setq auto-mode-alist (cons '("\\.\\(xml\\|xsl\\|rng\\|xhtml\\)\\'" . nxml-mode) auto-mode-alist)) to your .emacs. If you edit XML using iso-8859-N encodings other than iso-8859-1 and you are running Emacs 21.3 or later, then I recommend enabling unify-8859-on-decoding-mode, by adding (unify-8859-on-decoding-mode) to you .emacs. To get validation and schema-sensitive editing, you need a RELAX NG Compact Syntax (RNC) schema for you document. The schema directory includes some schemas for popular document types. For more on RELAX NG, see http://relaxng.org For a tutorial on RELAX NG Compact Syntax, see http://relaxng.org/compact-tutorial.html For automatically creating RNC schemas, I recommend my Trang program: http://www.thaiopensource.com/relaxng/trang.html You can use this to - infer an RNC schema from an instance document; - convert a DTD to an RNC schema; - convert a RELAX NG XML syntax schema to an RNC schema. To convert a RELAX NG XML syntax (.rng) schema to a RNC schema, you can also use the XSLT stylesheet from http://www.pantor.com/download.html To convert a W3C XML Schema to an RNC schema, you need first to convert it to RELAX NG XML syntax using Sun's RELAX NG converter tool rngconv (built on top of MSV). See https://msv.dev.java.net/ The file NEWS describes recent changes. Please use the list http://groups.yahoo.com/group/emacs-nxml-mode/ for bug reports, discussion. I will announce all new versions there. James Clark http://www.jclark.com/contact.html