Core: Drop the root parameter of jQuery.fn.init

The third parameter of `jQuery.fn.init` - `root` - was just needed to support
`jQuery.sub`. Since this API has been removed in jQuery 1.9.0 and Migrate 3.x
is not filling it in, this parameter is no longer needed.

This parameter has never been documented but it's safer to remove it in a major
update.

Closes gh-5096

diff --git a/src/core/init.js b/src/core/init.js
index 9fea5e6d483e6606baa50436a2f83a01264923a3..4ac091054d74e07acde103decb247680f8db3f97 100644 (file)
--- a/src/core/init.js
+++ b/src/core/init.js
@@ -15,7 +15,7 @@ var rootjQuery,
        // Shortcut simple #id case for speed
        rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/,
 
-       init = jQuery.fn.init = function( selector, context, root ) {
+       init = jQuery.fn.init = function( selector, context ) {
                var match, elem;
 
                // HANDLE: $(""), $(null), $(undefined), $(false)
@@ -23,10 +23,6 @@ var rootjQuery,
                        return this;
                }
 
-               // Method init() accepts an alternate rootjQuery
-               // so migrate can support jQuery.sub (gh-2101)
-               root = root || rootjQuery;
-
                // HANDLE: $(DOMElement)
                if ( selector.nodeType ) {
                        this[ 0 ] = selector;
@@ -36,8 +32,8 @@ var rootjQuery,
                // HANDLE: $(function)
                // Shortcut for document ready
                } else if ( typeof selector === "function" ) {
-                       return root.ready !== undefined ?
-                               root.ready( selector ) :
+                       return rootjQuery.ready !== undefined ?
+                               rootjQuery.ready( selector ) :
 
                                // Execute immediately if ready is not present
                                selector( jQuery );
@@ -108,7 +104,7 @@ var rootjQuery,
 
                        // HANDLE: $(expr) & $(expr, $(...))
                        } else if ( !context || context.jquery ) {
-                               return ( context || root ).find( selector );
+                               return ( context || rootjQuery ).find( selector );
 
                        // HANDLE: $(expr, context)
                        // (which is just equivalent to: $(context).find(expr)