add basic inputrules and pasterules

packages/extension-italic/index.ts

@@ -1,4 +1,4 @@
-import { Mark } from '@tiptap/core'
+import { Mark, markInputRule, markPasteRule } from '@tiptap/core'
 import { toggleMark } from 'prosemirror-commands'
 import { MarkSpec } from 'prosemirror-model'
 
@@ -36,4 +36,18 @@ export default class Italic extends Mark {
     }
   }
 
+  inputRules() {
+    return [
+      markInputRule(/(?:^|[^_])(_([^_]+)_)$/, this.schemaType),
+      // markInputRule(/(?:^|[^*])(\*([^*]+)\*)$/, this.schemaType),
+    ]
+  }
+
+  pasteRules() {
+    return [
+      markPasteRule(/_([^_]+)_/g, this.schemaType),
+      // markPasteRule(/\*([^*]+)\*/g, this.schemaType),
+    ]
+  }
+
 }