[css-sizing-3] overflow setting should affect min-content

[Dan503]

See #2270 (comment)

https://www.w3.org/TR/css-sizing-3/#valdef-width-min-content

If overflow is set to things other than visible then that should also affect min-content.

If a developer sets overflow: hidden; on a div placed in a css-grid column set to 1fr, currently that div will never allow the overflow to take affect.

Any time a developer sets an overflow property, it is a clear sign that the developer intends for the content to be able to overflow it's container.

[Dan503]

This is related to issue #2682. They are both trying to solve similar problems. Making the auto part of the 1fr unit behave more like people expect.

[fantasai]

Thanks @Dan503. :) I think I disagree with you specifically on this point: if the author specifically asks the element with overflow to size to its min-content size, then that's what should happen. Otherwise we can't intelligently combine it with other constraints, e.g. width: min-content; max-width: 100% shouldn't be equivalent to width: 0; max-width: 100% if overflow is set.

However, see #1865 for making overflow affect the min-content contribution, which I think will solve the problem you call out in 2270. I really want to fix this, but I have to first prove Web-compatibility, which is hard. :( If you think it'd be worth doing for Grid and Flex only, even if we can't make it happen for Block, please comment there to that effect...

[Dan503]

Ahh ok, I agree with the direction that the issue discussion is going in that issue. :)

I'm not sure how this affects block display though :/

[tabatkins]

Yeah, this is a dupe of #1865. Closing so conversation can happen over there instead. ^_^