fix: prevent duplicate footnotes for identical external links (#998)

zeevenn · web-flow · commit 9bccc4ec24d4 · 2025-09-22T21:14:30.000+08:00
close #981
diff --git a/packages/core/src/renderer/renderer-impl.ts b/packages/core/src/renderer/renderer-impl.ts
@@ -169,6 +169,13 @@ export function initRenderer(opts: IOpts): RendererAPI {
   }
 
   function addFootnote(title: string, link: string): number {
+    // 检查是否已经存在相同的链接
+    const existingFootnote = footnotes.find(([, , existingLink]) => existingLink === link)
+    if (existingFootnote) {
+      return existingFootnote[0] // 返回已存在的脚注索引
+    }
+
+    // 如果不存在，创建新的脚注
     footnotes.push([++footnoteIndex, title, link])
     return footnoteIndex
   }

Original file line number	Diff line number	Diff line change
`@@ -169,6 +169,13 @@ export function initRenderer(opts: IOpts): RendererAPI {`
`169`	`169`	`}`
`170`	`170`
`171`	`171`	`function addFootnote(title: string, link: string): number {`
	`172`	`+ // 检查是否已经存在相同的链接`
	`173`	`+ const existingFootnote = footnotes.find(([, , existingLink]) => existingLink === link)`
	`174`	`+ if (existingFootnote) {`
	`175`	`+ return existingFootnote[0] // 返回已存在的脚注索引`
	`176`	`+ }`
	`177`	`+`
	`178`	`+ // 如果不存在，创建新的脚注`
`172`	`179`	`footnotes.push([++footnoteIndex, title, link])`
`173`	`180`	`return footnoteIndex`
`174`	`181`	`}`