E4X and XML the object are really no more.

HACKING

@@ -111,8 +111,7 @@ In general: Just look at the existing source code!
   Wrong:
     for each (let elem in ary)
 
-  The exceptions to this rule are for objects with __iterator__ set,
+  The exceptions to this rule are for objects with __iterator__ set.
-  and for XML objects (see README.E4X).
 
 * Avoid using 'new' with constructors where possible, and use [] and
   {} rather than new Array/new Object.

common/javascript.vim

@@ -44,10 +44,10 @@ syntax sync maxlines=200
 
 "" JavaScript comments
 syntax keyword javaScriptCommentTodo    TODO FIXME XXX TBD contained
-syntax region  javaScriptLineComment    start=+\/\/+ end="\v$|(\</?(css|e4x)\>)@=" keepend contains=javaScriptCommentTodo,@Spell
+syntax region  javaScriptLineComment    start=+\/\/+ end="\v$|(\</?css\>)@=" keepend contains=javaScriptCommentTodo,@Spell
-syntax region  javaScriptLineComment    start=+^\s*\/\/+ skip=+\n\s*\/\/+ end="\v$|(\</?(css|e4x)\>)@=" keepend contains=javaScriptCommentTodo,@Spell fold
+syntax region  javaScriptLineComment    start=+^\s*\/\/+ skip=+\n\s*\/\/+ end="\v$|(\</?css\>)@=" keepend contains=javaScriptCommentTodo,@Spell fold
 syntax region  javaScriptCvsTag         start="\$\cid:" end="\$" oneline contained
-syntax region  javaScriptComment        start="/\*"  end="\v\*/|(\</?(css|e4x)\>)@=" contains=javaScriptCommentTodo,javaScriptCvsTag,@Spell fold
+syntax region  javaScriptComment        start="/\*"  end="\v\*/|(\</?css\>)@=" contains=javaScriptCommentTodo,javaScriptCvsTag,@Spell fold
 
 "" JSDoc support start
 if !exists("javascript_ignore_javaScriptdoc")
@@ -149,15 +149,13 @@ endif "DOM/HTML/CSS
 
 
 "" Code blocks
-syntax cluster javaScriptAll       contains=javaScriptComment,javaScriptLineComment,javaScriptDocComment,javaScriptStringD,javaScriptStringS,javaScriptRegexpString,javaScriptNumber,javaScriptFloat,javaScriptLabel,javaScriptSource,javaScriptType,javaScriptOperator,javaScriptBoolean,javaScriptNull,javaScriptFunction,javaScriptConditional,javaScriptRepeat,javaScriptBranch,javaScriptStatement,javaScriptGlobalObjects,javaScriptExceptions,javaScriptFutureKeys,javaScriptDomErrNo,javaScriptDomNodeConsts,javaScriptHtmlEvents,javaScriptDotNotation,javascriptE4X,javascriptCSS,javascriptCDATA
+syntax cluster javaScriptAll       contains=javaScriptComment,javaScriptLineComment,javaScriptDocComment,javaScriptStringD,javaScriptStringS,javaScriptRegexpString,javaScriptNumber,javaScriptFloat,javaScriptLabel,javaScriptSource,javaScriptType,javaScriptOperator,javaScriptBoolean,javaScriptNull,javaScriptFunction,javaScriptConditional,javaScriptRepeat,javaScriptBranch,javaScriptStatement,javaScriptGlobalObjects,javaScriptExceptions,javaScriptFutureKeys,javaScriptDomErrNo,javaScriptDomNodeConsts,javaScriptHtmlEvents,javaScriptDotNotation,javascriptCSS,javascriptCDATA
 syntax region  javaScriptBracket   matchgroup=javaScriptBracket transparent start="\[" end="\]" contains=@javaScriptAll,javaScriptParensErrB,javaScriptParensErrC,javaScriptBracket,javaScriptParen,javaScriptBlock,@htmlPreproc
 syntax region  javaScriptParen     matchgroup=javaScriptParen   transparent start="("  end=")"  contains=@javaScriptAll,javaScriptParensErrA,javaScriptParensErrC,javaScriptParen,javaScriptBracket,javaScriptBlock,@htmlPreproc
 syntax region  javaScriptBlock     matchgroup=javaScriptBlock   transparent start="{"  end="}"  contains=@javaScriptAll,javaScriptParensErrA,javaScriptParensErrB,javaScriptParen,javaScriptBracket,javaScriptBlock,@htmlPreproc
 
 syntax region  javascriptCDATA	matchgroup=javascriptCDATA start="<\!\[CDATA\[" end="\]\]>" keepend contains=javascriptCSS
 syntax region  javascriptCSS	matchgroup=javascriptCSSDelimiter start="<css>" end="</css>" contains=@cssTop
-syntax region  javascriptE4X	matchgroup=javascriptE4XDelimiter start="<e4x>" end="</e4x>" contains=@xmlTop
-syntax region  javascriptE4X	matchgroup=javascriptE4XDelimiter start="<>" end="</>" contains=@xmlTop oneline
 
 "" catch errors caused by wrong parenthesis
 syntax match   javaScriptParensError    ")\|}\|\]"

common/locale/en-US/developer.xml

@@ -177,55 +177,17 @@
 <h3 tag="plugin-documentation">Plugin documentation</h3>
 
 <p>
-    Plugins should provide inline documentation, which will appear on the
+    Plugins should provide documentation, which will appear on the
-    <ex>:help <str delim="">plugins</str></ex> page. The markup for help entries is the same
+    <ex>:help <str delim="">plugins</str></ex> page. The XML markup for help
-    as the above, along with a few extra plugin-specific entries. Here is an
+    entries is similar to the above, but has to be written in JSON syntax. You
-    example from the popular <em>flashblock</em> extension:
+    can find some examples in the
+    <link topic="&dactyl.plugins;">official plugins</link>.
 </p>
 
-<xml-block><escape><hl key="HelpXMLString">use strict</hl>;
-XML.ignoreWhitespace = <hl key="Boolean">false</hl>;
-XML.prettyPrinting   = <hl key="Boolean">false</hl>;
-<hl key="HelpXMLBase">var</hl> INFO = <!-- Cursed manual XML highlighting! -->
-<hl key="HelpXMLTagStart">&lt;plugin
-    <hl key="HelpXMLAttribute">name</hl><hl key="HelpXMLString">flashblock</hl>
-    <hl key="HelpXMLAttribute">version</hl><hl key="HelpXMLString">1.0</hl>
-    <hl key="HelpXMLAttribute">href</hl><hl key="HelpXMLString">http://5digits.org/pentadactyl/plugins#flashblock-plugin</hl>
-    <hl key="HelpXMLAttribute">summary</hl><hl key="HelpXMLString">Flash Blocker</hl>
-    <hl key="HelpXMLAttribute">xmlns</hl>{NS}></hl></escape>
-    <author email="maglione.k@gmail.com">Kris Maglione</author>
-    <license href="http://opensource.org/licenses/mit-license.php">MIT</license>
-    <project name="Pentadactyl" min-version="1.0"/>
-    <p>
-        This plugin provides the same features as the ever popular FlashBlock
-        Firefox addon. Flash animations are substituted with place holders which
-        play the original animation when clicked. Additionally, this plugin provides
-        options to control which sites can play animations without restrictions, and
-        triggers to toggle the playing of animation on the current page.
-    </p>
-    <item>
-        <tags>'fb' 'flashblock'</tags>
-        <spec>'flashblock' 'fb'</spec>
-        <type>boolean</type>
-        <default>true</default>
-        <description>
-            <p>
-                Controls the blocking of flash animations. When true, place
-                holders are substituted for flash animations on untrusted sites.
-            </p>
-        </description>
-    </item>
-    <escape><oa>…</oa>
-<hl key="HelpXMLTagEnd">&lt;/plugin></hl></escape>;</xml-block>
-
 <p>
-    The inline XML is made possible by
-    <link topic="https://developer.mozilla.org/en/E4X">E4X</link>.
     It is important that the documentation be assigned to the
     <em>INFO</em> variable, or &dactyl.appName; will not be able
-    to find it. The XML property changes are not compulsory, but
+    to find it. Beginning your file with <str>use strict</str>, while
-    they do prevent certain formatting problems that may occur
-    otherwise. Beginning your file with <str>use strict</str>, while
     not required, helps to prevent a lot of common errors.
 </p>