1253615 - Implement hanging-punctuation from CSS Text Module Level 3

Status: NEW

(Core :: Layout: Text and Fonts, enhancement)

Description

[Xidorn Quan [:xidorn] UTC+11]

hanging-punctuation is a useful feature for CJK layout. We should implement it.

Comment 1

[fantasai]

Fwiw, I'm reading through BreakAndMeasureText() and nsTextFrame::ReflowText() right now, and I think we can repurpose the aTrimWhitespace parameter to do this.

Comment 2

[fantasai]

(The code would need some additional tweaking to handle allow-end, though.)

Comment 3

[chharvey]

I started a CSS Reference page on `hanging-punctuation`, but it needs serious revision work: namely all the data associated with the property, browser support, specs, and examples. I know the page is supposed to pull data from the codebase, but I haven't yet submitted a pull request. For now though, the basic information is there for people who need the reference.

I hope my creation of this page is acceptable. I'm a new editor of MDN and I don't know all the proper editing protocols and procedures.

https://developer.mozilla.org/en-US/docs/Web/CSS/hanging-punctuation

Comment 4

[Jonathan Watt [:jwatt]]

Mass bug change to replace various 'parity' whiteboard flags with the new canonical keywords. (See bug 1443764 comment 13.)