Commit more fixes

Some remaining failures are due to spec/test changes

lib/Parser/TreeBuilder.php

@@ -4195,17 +4195,13 @@ class TreeBuilder {
         # Let local name be the tag name of the token.
         # Let element be the result of creating an element given document,
         #   localName, given namespace, null, and is.
-        if ($token->name === "svg" && $namespace !== Parser::SVG_NAMESPACE) {
-            //var_export($namespace);
-            //exit;
-        }
         try {
             $element = $this->DOM->createElementNS($namespace, $token->name);
         } catch (\DOMException $e) {
             // The element name is invalid for XML
             // Replace any offending characters with "UHHHHHH" where H are the
             //   uppercase hexadecimal digits of the character's code point
-            if ($namespace !== null) {
+            if ($namespace !== $this->htmlNamespace) {
                 $qualifiedName = implode(":", array_map([$this, "coerceName"], explode(":", $token->name, 2)));
             } else {
                 $qualifiedName = $this->coerceName($token->name);

tests/cases/TestTreeConstructor.php

@@ -35,7 +35,7 @@ class TestTreeConstructor extends \PHPUnit\Framework\TestCase {
     protected $ns;
 
     /** @dataProvider provideStandardTreeTests */
-    public function xtestStandardTreeTests(string $data, array $exp, array $errors, $fragment): void {
+    public function testStandardTreeTests(string $data, array $exp, array $errors, $fragment): void {
         $this->runTreeTest($data, $exp, $errors, $fragment, null);
     }
 
@@ -82,7 +82,8 @@ class TestTreeConstructor extends \PHPUnit\Framework\TestCase {
             $fragment = explode(" ", $fragment);
             assert(sizeof($fragment) < 3);
             if (sizeof($fragment) === 1) {
-                $fragmentContext = $doc->createElement($fragment[0]);
+                // an HTML element
+                $fragmentContext = $doc->createElementNS($htmlNamespace, $fragment[0]);
             } else {
                 $ns = array_flip(Parser::NAMESPACE_MAP)[$fragment[0]] ?? null;
                 assert(isset($ns));
@@ -362,7 +363,7 @@ class TestTreeConstructor extends \PHPUnit\Framework\TestCase {
             $prefix = Parser::NAMESPACE_MAP[$e->namespaceURI];
             assert((bool) $prefix, new \Exception("Prefix for namespace {$e->namespaceURI} is not defined"));
             $prefix .= " ";
-            if ($this->ns) {
+            if ($this->ns && $prefix === "html ") {
                 // if the parser is using the HTML namespace on purpose, the prefix should be omitted
                 $prefix = "";
             }