Broken link transformation

[iAdramelk]

Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

Prerequisites

• I'm using the latest version of Docusaurus.
• I have tried the npm run clear or yarn clear command.
• I have tried rm -rf node_modules yarn.lock package-lock.json and re-installing packages.
• I have tried creating a repro with https://new.docusaurus.io.
• I have read the console error message carefully (if applicable).

Description

.mdx extension is not removed from the link if the link text is split into two lines.

Reproducible demo

https://codesandbox.io/p/devbox/determined-northcutt-fdkm45?file=%2Fdocs%2Findex.mdx%3A5%2C1

Steps to reproduce

Put this code in the mdx file in the /docs/ folder (assuming that installation.mdx file exists in the same folder):

[Some
link](./installation.mdx)

[Some link](./installation.mdx)

Expected behavior

I expect that both links will be transformed to <a href="/docs/installation">Some link</a>.

Actual behavior

In practice, only the second link is transformed correctly. The first link is left as <a href="/installation.mdx">Some link</a>.

See the attached codesandbox demo.

Your environment

• Public source code and demo: https://codesandbox.io/p/devbox/determined-northcutt-fdkm45?file=%2Fdocs%2Findex.mdx%3A1%2C1-4%2C32
• Docusaurus version used: 3.2.1 (3.2.0 in the demo)

Self-service

• I'd be willing to fix this bug myself.

[iAdramelk]

P. S. Can't find an extension replacing logic in https://github.com/facebook/docusaurus/blob/main/packages/docusaurus-mdx-loader/src/remark/transformLinks/index.ts , would be grateful for a tip where to look for the related code.

[slorber]

This is already tracked in #9048 and related to our linkify function

I understand you'd be willing to attempt to fix it, but this is not so easy to migrate from processing docs as strings to ASTs so I'd rather solve this myself.