Feature/artciles: add softbreak plugin

[maerzhase]

• fix [Article editor] SHIFT + ENTER should insert a new line, and not insert a new block #304

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Name	Status	Preview	Updated
fxhash	✅ Ready (Inspect)	Visit Preview	Sep 19, 2022 at 10:44AM (UTC)

[GemN]

I think it's too permissive at the moment, you're not checking the node type, it could add undesired side effects, I would propose something like

  editor.insertSoftBreak = () => {
    // check the node type is p / ul / ol etc
    // insert \n
    insertSoftBreak() // to allow other plugins to work if they manipulate soft break
  }

[maerzhase]

sure we can add that, i am not sure if its necessary though. softlinebreak is only triggered on text nodes. that should already exclude all custom elements.

but we can also retrieve the node by cursor position and do a check for the type.

[maerzhase]

I included the changes proposed by @GemN 👍

[ciphrd]

I believe it's good to check for the block type, as we want to avoid any weird side effect.

There is an issue in the markdown transformation, this is the string which gets computed:

This is a test 
We can have multiline now, great

Another test

(see here https://gateway.fxhash-dev2.xyz/ipfs/Qmcfk4M1jwkFiN3FhEw1m1PoZX5nqjSPKqGHxuFKAM7qgV)

Resulting in the viewer not displaying the multiline properly:

I believe the resulting markdown should be:

This is a test
We can have multiline now, great

Another test

This is by default rendered like that by markdown viewers:

This is a test We can have multiline now, great

As there is no support for backline in paragraphs. It needs to be added.

[maerzhase]

the encoding comes from the mdast-util-to-markdown: syntax-tree/mdast-util-to-markdown@108450c

when i started to replace the encoded whitespaces it also breaks the newlines. @ciphrd i am not sure how to resolve this issue