Merge pull request tc39#22 from JSMonk/wasm-source-map-url

source-map.bs

@@ -63,6 +63,12 @@ spec:bikeshed-1; type:dfn; for:railroad; text:optional
     "publisher": "W3C",
     "status": "Living Standard",
     "title": "WebAssembly custom section"
+  },
+  "WasmNamesBinaryFormat": {
+    "href": "https://www.w3.org/TR/wasm-core-2/binary/values.html#names",
+    "publisher": "W3C",
+    "status": "Living Standard",
+    "title": "WebAssembly Names binary format"
   }
 }
 </pre>
@@ -362,7 +368,7 @@ also accept `//@` but `//#` is preferred.
 
 This recommendation works well for JavaScript, it is expected that other source files will
 have different conventions.  For instance, for CSS `/*# sourceMappingURL=<url> */` is proposed.
-On the WebAssembly side, such URL should be placed as a UTF-8 encoded string in the custom section ([[WasmCustomSection]]) named `sourceMappingURL`. 
+On the WebAssembly side, such a URL is encoded using [[WasmNamesBinaryFormat]], and it's placed as the content of the custom section ([[WasmCustomSection]]) named `sourceMappingURL`.
 
 `<url>` is a URL as defined in [[URL]]; in particular,
 characters outside the set permitted to appear in URIs must be percent-encoded