Unindented list inside HTML tag causes error

[RyotaUshio]

I'm not sure if I should file this issue to this repository or slidevjs/prettier-plugin. Excuse me if this is the wrong repo.

Describe the bug

The following syntax is proper. (Notice that the inner list is indented)

<div>
  <div>

  - A
  - B

  </div>
</div>

If I remove the indent (which prettier-plugin-slidev does), I got an error:

<div>
  <div>

- A
- B

  </div>
</div>

Error:

[plugin:vite:vue] Element is missing end tag.
/Users/ryotaushio/code/slidev-repro/slides.md__slidev_3.md:11:1
9  |  <p>A</p>
10 |  </li>
11 |  <li>
   |   ^
12 |  <p>B</p>
13 |  </div>
    at createCompilerError (/Users/ryotaushio/code/slidev-repro/node_modules/.pnpm/@[email protected]/node_modules/@vue/compiler-core/dist/compiler-core.cjs.js:1364:17)
    at emitError (/Users/ryotaushio/code/slidev-repro/node_modules/.pnpm/@[email protected]/node_modules/@vue/compiler-core/dist/compiler-core.cjs.js:2991:5)
    at Object.onclosetag (/Users/ryotaushio/code/slidev-repro/node_modules/.pnpm/@[email protected]/node_modules/@vue/compiler-core/dist/compiler-core.cjs.js:2350:13)
    at Tokenizer.stateInClosingTagName (/Users/ryotaushio/code/slidev-repro/node_modules/.pnpm/@[email protected]/node_modules/@vue/compiler-core/dist/compiler-core.cjs.js:785:16)
    at Tokenizer.parse (/Users/ryotaushio/code/slidev-repro/node_modules/.pnpm/@[email protected]/node_modules/@vue/compiler-core/dist/compiler-core.cjs.js:1143:16)
    at Object.baseParse (/Users/ryotaushio/code/slidev-repro/node_modules/.pnpm/@[email protected]/node_modules/@vue/compiler-core/dist/compiler-core.cjs.js:3030:13)
    at Object.parse (/Users/ryotaushio/code/slidev-repro/node_modules/.pnpm/@[email protected]/node_modules/@vue/compiler-dom/dist/compiler-dom.cjs.js:910:23)
    at Object.parse$1 [as parse] (/Users/ryotaushio/code/slidev-repro/node_modules/.pnpm/@[email protected]/node_modules/@vue/compiler-sfc/dist/compiler-sfc.cjs.js:1801:24)
    at createDescriptor (file:///Users/ryotaushio/code/slidev-repro/node_modules/.pnpm/@[email protected][email protected]_@[email protected][email protected][email protected][email protected][email protected]_/node_modules/@vitejs/plugin-vue/dist/index.js:79:42)
    at transformMain (file:///Users/ryotaushio/code/slidev-repro/node_modules/.pnpm/@[email protected][email protected]_@[email protected][email protected][email protected][email protected][email protected]_/node_modules/@vitejs/plugin-vue/dist/index.js:1633:33)

Minimal reproduction

Steps to reproduce the behavior:

1. Run this repro example: https://github.com/RyotaUshio/slidev-repro

git clone https://github.com/RyotaUshio/slidev-repro.git
cd slidev-repro
pnpm i
pnpm dev

2. The third page causes the error

Environment

• Slidev version: 52.6.0
• Browser: Google Chrome 142.0.7444.60
• OS: macOS 15.5

[crazylogic03]

@RyotaUshio i would like to work on this bug..Assign it to me

[kermanx]

Looks like an upstream bug (markdown-it): https://markdown-it.github.io/#md3=%7B%22source%22%3A%22%3Cdiv%3E%5Cn%20%20%3Cdiv%3E%5Cn%5Cn-%20A%5Cn-%20B%5Cn%5Cn%20%20%3C%2Fdiv%3E%5Cn%3C%2Fdiv%3E%22%2C%22defaults%22%3A%7B%22html%22%3Atrue%2C%22xhtmlOut%22%3Afalse%2C%22breaks%22%3Afalse%2C%22langPrefix%22%3A%22language-%22%2C%22linkify%22%3Afalse%2C%22typographer%22%3Afalse%2C%22_highlight%22%3Afalse%2C%22_strict%22%3Afalse%2C%22_view%22%3A%22src%22%7D%7D

[Bitshifter-9]

@crazylogic03 i could also help you to solve issue .. if okay would love to collaborate and work with you @kermanx please assign this issue too me also..

[crazylogic03]

@Bitshifter-9 Would love to collaborate with you

[kermanx]

I reconsidered the issue and realized that the current behavior might be the expected behavior. The formatted markdown can be considered as:

<div>
  <div>

- A
- B
  </div>

</div>

which has unmatched tags.

I also find that marked.js has the same behavior as markdown-it: Demo.

In that case, Prettier is the root cause of the issue. Forcibly fixing this error in Slidev may cause our markdown to conflict with the standards.

[Bitshifter-9]

@kermanx Could you review the latest commit and let me know if you spot any issues?