Markdown entry point with relative path producing odd links

[bbugh]

🐛 bug report

Hurray! Markdown as an entry point.

However, I've run into some small but breaking issues.

🎛 Configuration (.babelrc, package.json, cli command)

{
  "version": "2.0.0",
  "scripts": {
    "serve": "parcel src/index.html --global helpers",
    "build": "parcel build src/index.html --global helpers"
  },
  "devDependencies": {
    "csscomb": "^4.2.0",
    "eslint": "^5.14.0",
    "htmllint": "^0.7.3",
    "marked": "^0.6.1",
    "parcel-bundler": "^1.11.0",
    "sass": "^1.17.0"
  }
}

🤔 Expected Behavior

Given the files:

• /src/index.html
• /CHANGELOG.md

When I link to the changelog.md file:

<a href="../CHANGELOG.md" target="_blank">CHANGELOG</a>`

Then Parcel should produce:

• a file named dist/changelog.html
• code in index.html like <a href="changelog.html" target="_blank">CHANGELOG</a>

😯 Current Behavior

My current setup uses src/index.html as an entry point, and I'm linking from there to the git changelog.md:

<a href="../CHANGELOG.md" target="_blank">CHANGELOG</a>

Issue 1: the output is adding extra slash and underscores to the link:

<!-- compiled index.html -->
<a href="/__/CHANGELOG.html" target="_blank">CHANGELOG</a>

Issue 2: it's linking to an all-caps CHANGELOG.html, but the file it is producing is lowercase changelog.html.

Issue 3: it's producing two nearly identical html files. They appear to be the same, except the one under __/ looks like it's been uglified.

dist/changelog.html
dist/__/changelog.html

This doesn't happen with images, if I experimentally replace ../CHANGELOG.md with ../some-image.png

💁 Possible Solution

I'm guessing that some step with normalizing filenames in the markdown entry point code should be happening, but isn't.

🔦 Context

Described above.

On case-sensitive servers, this is a breaking issue.

💻 Code Sample

Described above.

🌍 Your Environment

Software	Version(s)
Parcel	1.12.3
Node	v10.15.3
npm/Yarn	yarn 1.13.0
Operating System	MacOS 10.12.6

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 14 days if no further activity occurs.