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

1 files changed, 7 insertions, 0 deletions

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;
+
 } )();