Allow themes to specify default font weight for headings.

[kjellr]

Currently, when using Gutenberg's default editor styles, the "Bold" option for the Header block has no effect:

This is because the heading is already bold by default.

A similar issue exists in Twenty Nineteen and Twenty Twenty too — they both use bold headings by default. They both have it so that when you select "Bold", the themes swap the default 700 weight for a 600 weight (effectively making the text less bold when bold is turned on).

Bold headings are a super-common pattern (it's even the browser default), so it would be excellent if Gutenberg could be smarter about this. Would it be possible to:

• Default to "Bold" being active here, and have a class added if the text is not bold?
• Allow themes to specify somehow what their default weight is?

The resolution to this may be just to wait for Global Styles, but I wanted to highlight this specifically, since it's come up in many themes.

[getdave]

I just hit this issue when working on the WP.org Make Blog. I assume it's fairly complex to fix?

[mtias]

This is supported through global styles UI now.