fix(sfc): treat custom block content as raw text

packages/compiler-core/src/options.ts

@@ -10,7 +10,11 @@ export interface ParserOptions {
   isCustomElement?: (tag: string) => boolean
   isBuiltInComponent?: (tag: string) => symbol | void
   getNamespace?: (tag: string, parent: ElementNode | undefined) => Namespace
-  getTextMode?: (tag: string, ns: Namespace) => TextModes
+  getTextMode?: (
+    tag: string,
+    ns: Namespace,
+    parent: ElementNode | undefined
+  ) => TextModes
   delimiters?: [string, string] // ['{{', '}}']
 
   // Map to HTML entities. E.g., `{ "amp;": "&" }`

packages/compiler-core/src/parse.ts

@@ -365,7 +365,7 @@ function parseElement(
 
   // Children.
   ancestors.push(element)
-  const mode = context.options.getTextMode(element.tag, element.ns)
+  const mode = context.options.getTextMode(element.tag, element.ns, parent)
   const children = parseChildren(context, mode, ancestors)
   ancestors.pop()