Selector: Re-expose jQuery.find.{tokenize,select,compile,setDocument}

`Sizzle.tokenize` is an internal Sizzle API, but exposed. As a result,
it has historically been available in jQuery via `jQuery.find.tokenize`.
That got dropped during Sizzle removal; this change restores the API.

Some other APIs so far only exposed on the `3.x` line are also added
back:
* `jQuery.find.select`
* `jQuery.find.compile`
* `jQuery.find.setDocument`

In addition to that, Sizzle tests have been backported for the following
APIs:
* `jQuery.find.matchesSelector`
* `jQuery.find.matches`
* `jQuery.find.compile`
* `jQuery.find.select`

A new test was also added for `jQuery.find.tokenize` - even Sizzle was
missing one.

Fixes gh-5259
Closes gh-5263
Ref gh-5260
Ref jquery/sizzle#242
Ref gh-5113
Ref gh-4395
Ref gh-4406

2 files changed, 13 insertions, 5 deletions

diff --git a/src/selector-native.js b/src/selector-native.js
index 07da6f37a..5eb582cfd 100644
--- a/src/selector-native.js
+++ b/src/selector-native.js
@@ -24,10 +24,6 @@
 import jQuery from "./core.js";
 import document from "./var/document.js";
 import whitespace from "./var/whitespace.js";
-
-// The following utils are attached directly to the jQuery object.
-import "./selector/escapeSelector.js";
-import "./selector/uniqueSort.js";
 import isIE from "./var/isIE.js";
 import booleans from "./selector/var/booleans.js";
 import rleadingCombinator from "./selector/var/rleadingCombinator.js";
@@ -40,6 +36,10 @@ import preFilter from "./selector/preFilter.js";
 import tokenize from "./selector/tokenize.js";
 import toSelector from "./selector/toSelector.js";
 
+// The following utils are attached directly to the jQuery object.
+import "./selector/escapeSelector.js";
+import "./selector/uniqueSort.js";
+
 var matchExpr = jQuery.extend( {
 	bool: new RegExp( "^(?:" + booleans + ")$", "i" ),
 	needsContext: new RegExp( "^" + whitespace + "*[>+~]" )
@@ -142,5 +142,6 @@ jQuery.extend( jQuery.find, {
 	},
 	matchesSelector: function( elem, expr ) {
 		return matches.call( elem, expr );
-	}
+	},
+	tokenize: tokenize
 } );
diff --git a/src/selector.js b/src/selector.js
index c995a65fe..52e975c90 100644
--- a/src/selector.js
+++ b/src/selector.js
@@ -1362,4 +1362,11 @@ setDocument();
 
 jQuery.find = find;
 
+// These have always been private, but they used to be documented as part of
+// Sizzle so let's maintain them for now for backwards compatibility purposes.
+find.compile = compile;
+find.select = select;
+find.setDocument = setDocument;
+find.tokenize = tokenize;
+
 } )();