Or better add dir="auto" to every tag: p li h1 h2 ..., so every tag will be aligned based on the content it has.
That way it will be perfect!

Ideally that would be something solved upstream in ueberdosis/tiptap#116 but I guess we can also add custom nodes for that as suggested there.

Yup, this better be implemented in the core project.
Unfortunately I can't contribute directly, since this is beyond my knowledge, all I know is HTML, CSS and a little bit of Javascript/jQuery and PHP.

My temporary workaround for this is to install "JSLoader" app, then go to Settings => "JavaScript loader" (Under "Administration" section) then add/paste this code:

setInterval(function addDirAutoAttribute() {
  var theID = document.getElementById("editor-container");
  if(theID){
    var theElement = document.getElementsByClassName("ProseMirror");
    for (var i=0; i < theElement.length; i++) {
      if (!theElement[i].hasAttribute("dir")) {
        theElement[i].setAttribute("dir", "auto");
      }
    }
  }
}, 1000);
window.onload = addDirAutoAttribute;

Then click "Save".

Not ideal, not efficient, ... but at least it works.

Interesting pull request on tiptap ueberdosis/tiptap#2963

I wrote a extention that automatically adds dir="ltr|rtl" to nodes. It's more flexible than dir="auto". It may be helpful:

https://github.com/amirhhashemi/tiptap-text-direction

But how to use this with NextCloud ?

It a must for all text editors in email, notes, wikis etc.

Notes, Collectives and Deck use the text editor so they would directly benefit from implementing it here. Other apps would need to be handled separately.

See also nextcloud/server#31420 for general RTL support in Nextcloud.

Good reference on how to adapt the UI bits is nextcloud/forms#1654

First version https://github.com/nextcloud/text/pull/6874/files supports:

• Paragraph
• Heading
• Lists

As follow-up content inside of tables should be supported too. @hamza221 could you please look in it / check if a first PR (result) make sense in your eyes? Thank you!