[Libreoffice-bugs] [Bug 128080] Bopomofo tone marks position incorrectly in vertical writing.

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=128080

--- Comment #9 from Mark Hung <marklh9 at gmail.com> ---
(In reply to V Stuart Foote from comment #8)
> In your OP you said it "doesn't work" and it was "clamped into the line" in
> vertical mode text. Was that not the case?
> 

All I want to express is in Attachment 154969. I said that the tone marks were
"clamped" into the line because they were overlapped with other characters.
Saying "it doesn't work" might exaggerate. It's possible that I expressed in a
wrong way.

> But, I agree we do not shift the tone marks 'far enough' to the right of the
> base line in vertical mode. But they are shifted so the traditional Chinese
> mode in zh-TW locale is activating the 'mark' position alternates provided
> in the Source Han Sans 2.001
> 
> So is it  a font metric issue with the TC version of Source Han Sans? Or the
> LO handling? And would the tweak be needed to harfbuzz, or in our
> CommonSalLayout?

It's not easy to answer. Harfbuzz utility compiled in Linux rendered as
expected. Simply reverting 51b9042efea09 make the tone marks shift correctly
relative to other bopomofo marks but shift the whole line.

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