Numbered list wrong numeration after increase + decrease indent

[Alspb]

Is there an existing issue for this?

• I have searched the existing issues

Flutter Quill version

master

Steps to reproduce

1. Increase the numbered list indent 3 times, until the numbering style is the same again.
2. For the last list item decrease its indent 3 times.

Expected results

The last item numeration start from 1.

Actual results

The last item numeration start from 2.

Code sample

Code sample

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Screenshots or Video

Screenshots / Video demonstration

Logs

Logs

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[Alspb]

@AtlasAutocode , could you please take a look since you might be familiar with this code section?

[AtlasAutocode]

Part of the confusion might be that indents are limited to 5 levels (no idea why).
Ordered lists seem to have only 3 levels so it repeats the sequence.
When you indent 3 times you get back to '1.' However, this is not the same as the un-indented '1.'
So, the next outdented list item will be '2.'. That is correct (but not what you want!)

It appears that the first list item is implicitly set to 1 even if it is shown as an indented value.
For example: start a list and indent to give the first item 'a: text'. Enter another list item, outdent it and it will be '2. next'.

I am not familiar with the code, but I guess that there is an overlap between indentation of text and indentation of list items.
Am I correct that you want to create a normal list, but have it indented?

I see several approaches:

1. Resolve the confusion between indentation and list-depth
2. Have 5 levels of list indentation: 1, a, i, and then what?
3. I am sure there will be some other way....

[Alspb]

Sounds reasonable.
Since list indentation is used to create nested lists, the editor thinks that there's an item number "1" before the "text" item.
But it looks strange of course, especially for the user who simply wants to use different numbering style for the first list (i.e., "text")

I think that the connection between list indentation and list depth is very useful, so it's better not to change it.
No sure what is the proper way of handling such issues. Maybe "text" item should also be unindented together with "next".

Also, delta to HTML converter treats such cases as if "text" is not indented too.

As for having 5 types of list numeration, I think it's reasonable anyway. One can take the same styles as in type attribute of the ol HTM tag, it will also make the conversion to HTML more precise.

[AtlasAutocode]

I was thinking that it might be more logical if indentation of the first item could be handled as an indentation of the whole list.
The first item would then always be '1.' and you would not be able to 'outdent' the second item. (Avoids the issue in your screen shot)
Indentation of subsequent items would then follow the expected pattern 'a', 'i' ...
Allowing the user to pick a different starting label would be tricky. But word processors allow starting a list at '4' (for example). I often have to do this when continuing a list after an interruption.

Of course, it is easy for me to suggest this, as I have no idea if this can be done...