gecko-dev/layout/reftests/columns/first-line-first-letter-ref...

<!DOCTYPE html>
<meta charset="UTF-8">

<style>
div {
  border: 1px solid red;
  width: 400px;
}
div::first-letter {
  font-size: 200%;
}
div::first-line {
  color: blue;
}
</style>

<div>first line (blue)<br>second line</div>
Bug 1527725 - Exclude ColumnSetWrapperFrame from the first letter style consistency check in nsBlockFrame. r=dbaron If there's ::first-letter pseudo element on the multicol container, ColumnSetWrapperFrame will have the first letter style, but it won't get the NS_BLOCK_HAS_FIRST_LETTER_STYLE bit during frame construction. The actual first-letter frame construction happens under -moz-column-content anonymous block. This patch excludes ColumnSetWrapperFrame from the debug check to meet the expectation. Add a reftest to make sure ::first-letter and ::first-line still work after introducing ColumnSetWrapperFrame, and no assertion is fired. Differential Revision: https://phabricator.services.mozilla.com/D20757 --HG-- extra : moz-landing-system : lando 2019-02-22 04:14:45 +03:00			`<!DOCTYPE html>`
			`<meta charset="UTF-8">`

			`<style>`
			`div {`
			`border: 1px solid red;`
			`width: 400px;`
			`}`
			`div::first-letter {`
			`font-size: 200%;`
			`}`
			`div::first-line {`
			`color: blue;`
			`}`
			`</style>`

			`<div>first line (blue)<br>second line</div>`