Add $anchor to meta-schema, update $id

Author: handrews

hyper-schema.json

@@ -1,5 +1,5 @@
 {
-    "$schema": "https://json-schema.org/draft/2019-08/hyper-schema#",
+    "$schema": "https://json-schema.org/draft/2019-08/hyper-schema",
     "$id": "https://json-schema.org/draft/2019-08/hyper-schema",
     "$vocabulary": {
         "https://json-schema.org/draft/2019-08/vocab/core": true,

links.json

@@ -1,5 +1,5 @@
 {
-    "$schema": "https://json-schema.org/draft/2019-08/hyper-schema#",
+    "$schema": "https://json-schema.org/draft/2019-08/hyper-schema",
     "$id": "https://json-schema.org/draft/2019-08/links",
     "title": "Link Description Object",
     "allOf": [

meta/core.json

@@ -11,12 +11,18 @@
     "properties": {
         "$id": {
             "type": "string",
-            "format": "uri-reference"
+            "format": "uri-reference",
+            "$comment": "Non-empty fragments not allowed.",
+            "pattern": "^[^#]#?$"
         },
         "$schema": {
             "type": "string",
             "format": "uri"
         },
+        "$anchor": {
+            "type": "string",
+            "pattern": "^[A-Za-z][-A-Za-z0-9.:_]*$"
+        },
         "$ref": {
             "type": "string",
             "format": "uri-reference"

schema.json

@@ -1,6 +1,6 @@
 {
-    "$schema": "https://json-schema.org/draft/2019-08/schema#",
-    "$id": "https://json-schema.org/draft/2019-08/schema#",
+    "$schema": "https://json-schema.org/draft/2019-08/schema",
+    "$id": "https://json-schema.org/draft/2019-08/schema",
     "$vocabulary": {
         "https://json-schema.org/draft/2019-08/vocab/core": true,
         "https://json-schema.org/draft/2019-08/vocab/applicator": true,