EmacsnXML

Pointers

• http://www.thaiopensource.com/nxml-mode/ - home
• http://www.thaiopensource.com/ - download

• http://www.emacswiki.org/cgi-bin/wiki/NxmlMode - emacswiki entry
• http://groups.yahoo.com/group/emacs-nxml-mode/ - mailing list
• interview with James Clark - creator
• http://infohost.nmt.edu/tcc/help/pubs/nxml/ - XML document authoring with emacs nxml-mode
• http://hacks.oreilly.com/pub/h/2044 - Edit XML Documents with Emacs and nXML
• Internal
  • EmacsXML

Schemas

• http://www.relaxng.org/ - RelaxNG
• http://www.xml.com/pub/a/2002/06/19/rng-compact.html - RelaxNG compact

nXML only supports RelaxNG compact-syntax schemas (.rnc files), e.g.:

    element date { attribute type { text }?,
    element year { text },
    element month { text },
    element day { text } }

Convert your existing schema to rng format using the sun relaxng converter:

• http://www.sun.com/software/xml/developers/relaxngconverter/

    java -jar rngconv.jar /path/to/schema.xsd > /path/to/output/master-server-list.rng

Convert the rng format to rnc compact syntax using trang:

• http://www.thaiopensource.com/relaxng/trang.html

    java -jar trang-20030619/trang.jar /path/to/schema.rng /path/to/output/schema.rnc

Folding

Built-in nXML folding only works if you are in a valid 'section'. An XML element is treated as a section if:

• its local name (that is, the name without the prefix) matches the regexp defined as nxml-section-element-name-regexp.
• either its first child element or a descendant of that first child element has a local name matching the variable `nxml-heading-element-name-regexp'; and
• its start-tag occurs at the beginning of a line (possibly indented).

(setq nxml-section-element-name-regexp "myregexp")
(setq nxml-heading-element-name-regexp "\\(regexp1\\|regexp2\\)")

HideShow - another folding option

• http://www.emacswiki.org/cgi-bin/wiki/NxmlModeForXHTML - where I got the code

I added the code below to enable hideshow in nXML mode:

; hide-show for nxml mode
(add-to-list 'hs-special-modes-alist
             '(nxml-mode
               "<!--\\|<[^/>]>\\|<[^/][^>]*[^/]>"
               ""
               "<!--" ;; won't work on its own; uses syntax table
               (lambda (arg) (my-nxml-forward-element))
               nil))

(defun my-nxml-forward-element ()
  (let ((nxml-sexp-element-flag))
    (setq nxml-sexp-element-flag (not (looking-at "<!--")))
    (unless (looking-at outline-regexp)
      (condition-case nil
          (nxml-forward-balanced-item 1)
        (error nil)))))

Other folding fu

• Need to look into OutlineMode
• http://www.emacswiki.org/cgi-bin/wiki/FoldDwim - unified interface for folding modes