[FIX] base: ir_qweb, allow to use link with xmlns

Until now, it is impossible to do <g:title>xxx</title> because qweb
will autoclose the <g:link> because it checks if link is a void element
instead to check g:link.

Now we check the el_tag instead of unqualified_tag.

closes odoo/odoo#159476

Signed-off-by: Rémy Voet (ryv) <ryv@odoo.com>

odoo/addons/base/models/ir_qweb.py

@@ -1317,7 +1317,7 @@ class IrQWeb(models.AbstractModel):
 
         if unqualified_el_tag != 't':
             el.set('t-tag-open', el_tag)
-            if unqualified_el_tag not in VOID_ELEMENTS:
+            if el_tag not in VOID_ELEMENTS:
                 el.set('t-tag-close', el_tag)
 
         if not ({'t-out', 't-esc', 't-raw', 't-field'} & set(el.attrib)):
@@ -1371,7 +1371,7 @@ class IrQWeb(models.AbstractModel):
             attributes = ''.join(f' {name}="{escape(str(value))}"'
                                 for name, value in attrib.items() if value or isinstance(value, str))
             self._append_text(f'<{el_tag}{"".join(attributes)}', compile_context)
-            if unqualified_el_tag in VOID_ELEMENTS:
+            if el_tag in VOID_ELEMENTS:
                 self._append_text('/>', compile_context)
             else:
                 self._append_text('>', compile_context)
@@ -1386,7 +1386,7 @@ class IrQWeb(models.AbstractModel):
             body = self._compile_directive(el, compile_context, 'inner-content', level)
 
         if unqualified_el_tag != 't':
-            if unqualified_el_tag not in VOID_ELEMENTS:
+            if el_tag not in VOID_ELEMENTS:
                 self._append_text(f'</{el_tag}>', compile_context)
 
         return body

odoo/addons/base/tests/test_qweb.py

@@ -670,6 +670,36 @@ class TestQWebNS(TransactionCase):
         with self.assertRaises(QWebException, msg=error_msg):
             self.env['ir.qweb']._render(view1.id)
 
+
+    def test_render_static_xml_with_void_element(self):
+        """ Test the rendering on a namespaced view with dynamic URI (need default namespace uri).
+        """
+        tempate = """
+            <rss xmlns:g="http://base.google.com/ns/1.0" version="2.0">
+                <g:brand>Odoo</g:brand>
+                <g:link>My Link</g:link>
+            </rss>
+        """
+        expected_result = """
+            <rss xmlns:g="http://base.google.com/ns/1.0" version="2.0">
+                <g:brand>Odoo</g:brand>
+                <g:link>My Link</g:link>
+            </rss>
+
+        """
+
+        view1 = self.env['ir.ui.view'].create({
+            'name': "dummy",
+            'type': 'qweb',
+            'arch': """
+                <t t-name="base.dummy">%s</t>
+            """ % tempate
+        })
+
+        rendering = self.env['ir.qweb']._render(view1.id)
+
+        self.assertEqual(etree.fromstring(rendering), etree.fromstring(expected_result))
+
 class TestQWebBasic(TransactionCase):
     def test_compile_expr(self):
         tests = [