[css-inline-3] leading-trim and descendant inlines
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Description
Currently leading-trim only looks at the root inline box's metric. What if there is content on the first/last line that is taller than the root inline? Should that content also be considered?
We might want to add safe/unsafe keywords to leading-trim, to look at the descendants and pick the highest one, or not and just match to the root inline box. (Probably the default should be matching the root inline box, though.)
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reading the CSS Inline Level 3 discussion in this issue and the existing definition of leading-trim. Determine whether descendant inline metrics should affect the first and last lines, and whether safe/unsafe keywords are needed. Done means the behavior and default semantics are resolved clearly enough for the specification.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- css
- Domain
- frontend
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100