UnderlineMark added

packages/tiptap-extensions/src/marks/Bold.js

@@ -38,7 +38,7 @@ export default class BoldMark extends Mark {
 
 	inputRules({ type }) {
 		return [
-			markInputRule(/(?:\*\*|__)([^\*_]+)(?:\*\*|__)$/, type),
+			markInputRule(/\*\*([^*]+)\*\*$/, type),
 		]
 	}
 

packages/tiptap-extensions/src/marks/Underline.js

@@ -0,0 +1,41 @@
+import { Mark } from 'tiptap'
+import { toggleMark, markInputRule } from 'tiptap-commands'
+
+export default class UnderlineMark extends Mark {
+
+	get name() {
+		return 'underline'
+	}
+
+	get schema() {
+		return {
+			parseDOM: [
+				{
+					tag: 'u',
+				},
+				{
+					style: 'text-decoration',
+					getAttrs: value => value === 'underline',
+				},
+			],
+			toDOM: () => ['u', 0],
+		}
+	}
+
+	keys({ type }) {
+		return {
+			'Mod-u': toggleMark(type),
+		}
+	}
+
+	command({ type }) {
+		return toggleMark(type)
+	}
+
+	inputRules({ type }) {
+		return [
+			markInputRule(/__([^_]+)__$/, type),
+		]
+	}
+
+}