Footnote Area: Support Max Height

[andrewerlanger]

Hi there!

First and foremost: many thanks for the amazing work you've done on the footnotes front already, really impressive stuff 👏

I just wanted to add one more item to the short list of features missing from the specification: supporting the max-height property for the footnote area.

Per the w3.org footnote specs:

The max-height property on the footnote area limits the size of this area, unless the page contains only footnotes (as may happen on the last page of a document).

Since it is undesirable for a page to consist only of footnotes, user agents may set a default max-height value on the footnote area.

As it stands, setting a max-height on the footnote area will technically limit the height, but the footnotes themselves overflow from the container rather than being displayed on the following page.

For example, the following css...

@footnote {
  max-height: 6cm;
  background: red;
  float: bottom;
}

...produces this in the PDF:

Ideally, footnotes 5. onwards would be displayed on the following page 🤓

[liZe]

Hi @andrewerlanger

The feature has been added and tested, we hope that it works well for your use case!

[andrewerlanger]

@liZe thanks for the super quick turnaround, much appreciated! 🙏