Support for [[wikilinks]]

[dukeofgaming]

I'm using Foam in VSCode, and while I have been somewhat reluctant to use wikilinks, they do have practicality and projects such as Cosma support this.

I think a simple way to support this is to:

1. Add a directive for a relative or absolute document root, for the CLI it could be added as a --document-root flag
2. Resolve to the first markdown file found with the name inside [[<file without ".md">]]
3. If there are 2+ files with the same number, it's up to the user to resolve this ambiguity.

The emergent feature with other tools like Foam, Cosma or even Obsidian is that one could visualize what other internal links this is referencing.

P.S.: It would be nice if there was an official Obsidian plugin

[yhatt]

Marp Core is based on the CommonMark, the standard spec of Markdown. The specification for Wikilinks is not defined in CommonMark, and it may bring low interoperability as the Markdown document. So we have no plans to implement Wikilinks syntax.

However, Marp also allows plug-ins to add the syntax you need. A lot of markdown-it plugins to add Markdown syntax works also in Marp, so it would be worth to try using markdown-it-wikilinks, or other compatible plugins.

Marp CLI can change the engine for converting Markdown into the core that has injected plugin(s) as you like.

// engine.mjs
import markdownItWikilinks from 'markdown-it-wikilinks';

export default ({ marp }) => marp.use(markdownItWikilinks);

marp --engine engine.mjs slide.md