markdown 图片自定义渲染，token.attrGet('alt') 获取不到值

[Huangbinghui]

Describe the bug

markdown 图片自定义渲染，token.attrGet('alt') 获取不到值。
md.renderer.rules.image = (tokens, idx, options, env, self) => { const token = tokens[idx]; let alt = token.attrGet('alt'); console.log("alt :"+ alt); let result = self.renderToken(tokens, idx, options); if (alt) { result +=\n } return result; }
这段代码alt的值获取不到。

Reproduction

config.js 的markdown配置中配置如下：
md.renderer.rules.image = (tokens, idx, options, env, self) => { const token = tokens[idx]; let alt = token.attrGet('alt'); console.log("alt :"+ alt); let result = self.renderToken(tokens, idx, options); if (alt) { result +=\n } return result; }

Expected behavior

希望可以取到alt属性值。

System Info

System:
    OS: macOS 15.3.1
    CPU: (8) arm64 Apple M1
    Memory: 77.58 MB / 8.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 23.6.0 - ~/.nvm/versions/node/v23.6.0/bin/node
    npm: 10.9.2 - ~/.nvm/versions/node/v23.6.0/bin/npm
    pnpm: 8.15.0 - ~/Library/pnpm/pnpm
  Browsers:
    Chrome: 133.0.6943.142
    Safari: 18.3
  npmPackages:
    vitepress: ^1.6.3 => 1.6.3

Additional context

No response

Validations

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• Follow our Code of Conduct
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.

[brc-dd]

use token.content

[Huangbinghui]

but ，the case is <img src="/page_214_1.png" alt="图 14-1" style="zoom:25%;" />
won't work in this case .

[Huangbinghui]

could you please share the project of the picture，so i can debug myself。