About tilde in vertical typesetting
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Description
https://www.w3.org/International/clreq/#id199
In the website, it is noted that U+FF5E FULLWIDTH TILDE should be rotated 90° clockwise in vertical writing mode as follow:
- Em dashes, ellipsis, and connector marks need to be rotated 90 degrees clockwise in vertical writing mode.
But most fonts not only rotate the symbol by 90°, but also flipped the sign horizontally to fit our writing style. Should this part be clarified?
P/s: I would actually suggest that this part should be handled by font but not the rendering engine.
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 with the linked CLReq section on U+FF5E FULLWIDTH TILDE and vertical writing. Review the existing wording and the issue's font-versus-rendering-engine question; the work is done when the specification's treatment of rotation and horizontal flipping is clarified or the issue records the rationale for leaving it unchanged.
Written by the indexing model from the issue text.
Assessment
- Domain
- documentation, internationalization
- Issue type
- Documentation
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 42/100