On 11/19/2018 01:40 PM, Nathan Willis wrote:
I think the clean-up that I just did to the "clusters" usermanual
chapter improves things, but it did also reveal where there's some
additional room for growth.
For a couple of those, I would really appreciate some suggestions. In
particular, I'd like to hear any recommendations from the list for two
things:
- a real-world example of where cluster-level 2 is what you'd actually
want to use
- a real-world example of where level 0 does the wrong thing but level
1 gets it right (I thought of multiple-mark reordering here already;
not sure how many others there are...)
I just think that some 'from the wild' examples would make the subject
easier to digest.
Thanks,
Nat
Your post, and the updated documentation, is perfect timing for a
question I have been working on. We have a real world application that
used a very old version of harfbuzz (0.9x). We are updating to the
current harfbuzz release, and one of the issues we are working on is how
to use the new harfbuzz to locate grapheme breaks. We were under the
impression this information would be available in the cluster numbers
after shaping, but your updates to the documentation are making us
wonder if we are not using the API correctly. We have tried cluster
levels 0 and 1, and neither one worked as we expected. In every case,
combining accents are marked as being in a separate cluster to the base
codepoint. For example, U+0061 Latin Small Letter A followed by U+0308
Combining Diaeresis are being placed in adjacent clusters rather than
the same cluster. Did I misunderstand the purpose of clustering
codepoints? Is there a way to use the current version of harfbuzz to
break graphemes?
Any help or insight anyone can provide would be greatly appreciated.
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