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Added 2 white-space tests related to multi-columns container #26912

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@TalbotG TalbotG commented Dec 16, 2020


These 2 tests verifies how multi-column containers handle 'white-space: pre' and 'white-space: nowrap' when involved with atomic inlines (inline-blocks and inline-tables). These 2 tests expose some implementation failures in Firefox 86, Chromium 89 and Epiphany (WebKitGTK+ 2.30.3).

It appears that browsers treat 'column-gap: 2em' as suppressible, cancelable white spaces.

Over at my website, these files are:

@TalbotG TalbotG requested review from frivoal and fantasai Dec 16, 2020
@TalbotG TalbotG self-assigned this Dec 16, 2020
@wpt-pr-bot wpt-pr-bot requested review from kojiishi, nox, plinss and r12a Dec 16, 2020
@TalbotG TalbotG removed the request for review from plinss Dec 16, 2020
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@fantasai fantasai left a comment

So... as far as I can tell these tests are invalid. You're creating a series of four inline blocks in a single line box. There is no way column-gap can have an effect on this. There is only one column's worth of content, because there is only one line box, and line boxes can't break across columns. That line box happens to overflow its column to the right, into subsequent columns, but it hasn't fragmented into them.

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@TalbotG TalbotG commented Feb 26, 2021

Okay. Understood. Closing this.

@TalbotG TalbotG closed this Feb 26, 2021
@TalbotG TalbotG deleted the TalbotG:CSS3Text-GT-PR20 branch Feb 26, 2021
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