fix(compiler-core): math tag should use block

Author: linzhe141

packages/compiler-core/__tests__/transforms/transformElement.spec.ts

@@ -1284,6 +1284,18 @@ describe('compiler: element transform', () => {
     })
   })
 
+  test('<math> should be forced into blocks', () => {
+    const ast = parse(`<div><math/></div>`)
+    transform(ast, {
+      nodeTransforms: [transformElement],
+    })
+    expect((ast as any).children[0].children[0].codegenNode).toMatchObject({
+      type: NodeTypes.VNODE_CALL,
+      tag: `"math"`,
+      isBlock: true,
+    })
+  })
+
   test('force block for runtime custom directive w/ children', () => {
     const { node } = parseWithElementTransform(`<div v-foo>hello</div>`)
     expect(node.isBlock).toBe(true)

packages/compiler-core/src/transforms/transformElement.ts

@@ -117,7 +117,7 @@ export const transformElement: NodeTransform = (node, context) => {
         // updates inside get proper isSVG flag at runtime. (#639, #643)
         // This is technically web-specific, but splitting the logic out of core
         // leads to too much unnecessary complexity.
-        (tag === 'svg' || tag === 'foreignObject'))
+        (tag === 'svg' || tag === 'foreignObject' || tag === 'math'))
 
     // props
     if (props.length > 0) {