improve markdown import and export

packages/editor-ext/src/lib/markdown/utils/tabs.marked.ts

@@ -13,7 +13,8 @@ interface TabbedToken {
   activeTabIndex: number;
 }
 
-const HEADER_RE = /^===([!+])?\s*["'“”‘’]([^"'“”‘’\n]+)["'“”‘’]\s*$/gm;
+const HEADER_RE =
+  /^===([!+])?\s*["'“”‘’]((?:\\.|[^"'“”‘’\n])+?)["'“”‘’]\s*$/gm;
 
 export const tabsExtension = {
   name: 'tabbed',
@@ -38,7 +39,7 @@ export const tabsExtension = {
         index: m.index,
         raw: m[0],
         marker: m[1] ?? '',
-        label: m[2].trim(),
+        label: unescapeTabLabel(m[2].trim()),
       });
     }
 
@@ -87,7 +88,7 @@ export const tabsExtension = {
       if (body.length > 0) {
         body = body
           .split('\n')
-          .map((line) => line.replace(/^\s{2,4}/, ''))
+          .map((line) => line.replace(/^(?:\t| {2,4})/, ''))
           .join('\n');
       }
 
@@ -137,6 +138,10 @@ export const tabsExtension = {
   },
 };
 
+function unescapeTabLabel(value: string): string {
+  return value.replace(/\\(["\\])/g, '$1');
+}
+
 function escapeHtml(value: string): string {
   return value
     .replace(/&/g, '&')

packages/editor-ext/src/lib/markdown/utils/turndown.utils.ts

@@ -69,7 +69,7 @@ function tabs(turndownService: _TurndownService) {
 
       const isNestedTabsNode =
         node.parentElement?.closest('div[data-type="tabs"]') !== null;
-        
+
       const tabBlocks = tabNodes.map((tabNode, index) => {
         const labelNode = tabNode.querySelector(
           ':scope > div[data-type="tabLabel"]',
@@ -279,15 +279,16 @@ function video(turndownService: _TurndownService) {
 function sanitizeTabLabel(value: string): string {
   return value
     .replace(/[\r\n]+/g, ' ')
+    .replace(/\\/g, '\\\\')
     .replace(/"/g, '\\"')
     .trim();
 }
 
 function indentMarkdownBlock(content: string): string {
-  if (!content) return '    ';
+  if (!content) return '\t';
 
   return content
     .split('\n')
-    .map((line) => (line.trim() ? `    ${line}` : ''))
+    .map((line) => (line.trim() ? `\t${line}` : ''))
     .join('\n');
 }