TOC not recognized custom title id

[ertankayalar]

Hello, thanks for great extension. But I have little issue about table of contents.

Problem

TOC not recognized custom title id in markdown

## Title 1 {#custom-title-id}

and created like this

[Title 1 {#custom-title-id}]{#title-1}

How to reproduce

[Title 1](#custom-title-id)

All suggestions are wellcome.

Thanks,

[Lemmingh]

Thank you for your input.

{#custom-id} looks like a pandoc's extension.

I'm afraid we will not support it until a good number of users request it.

---

By default (in github mode), our latest dev build produces

## Title 1 {#custom-title-id}

- [Title 1 {#custom-title-id}](#title-1-custom-title-id)

It's different form your result. So I wonder ...

Are you also using other extensions like markdown-it-attrs?

Other extensions could interfere with our heading ID generation. That bug was fixed in #817

[SRGDamia1]

This is pretty old, but I'd like this feature as well.

[SRGDamia1]

It would also be nice to recognize html type anchor tags, ie:

# <a id='custom-title-id'></a>Title 1 would create: [Title 1](#custom-title-id) instead of: - [<a id='custom-title-id'></a>Title 1](#title-1

[Lemmingh]

Markdown does not work this way, although it can be what you see when rendering Markdown documents as HTML on a specific platform.

CommonMark does not care about the meaning of HTML, and asks implementations to pass HTML-like text as is. But web browsers process HTML according to WHATWG standards which are much different from CommonMark. Meanwhile, raw HTML is already a major cause of corrupted rendering results, and it's generally discouraged to have raw HTML in a Markdown document.

Last but not least, heading ID generation is heavily platform-dependent, which is why we have a "slugify mode" setting and plan to get a "document mode" setting.