On Thu, Dec 13, 2018 at 11:05 PM Ansel Sermersheim <an...@copperspice.com> wrote:
> On 11/29/18 7:29 AM, Behdad Esfahbod wrote: > > On Tue, Nov 27, 2018 at 8:34 PM Ansel Sermersheim <an...@copperspice.com> > wrote: > >> On 11/19/2018 07:16 PM, Behdad Esfahbod wrote: >> >> Hi Ansel, >> >> On Mon, Nov 19, 2018 at 7:44 PM Ansel Sermersheim <an...@copperspice.com> >> wrote: >> >>> ...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. >> >> >> That doesn't sound right. Are you setting any custom unicode-funcs on >> the buffer? Only thing I can think of that can do this is faulty / missing >> Unicode funcs. >> >> >> We had a feeling something was missing. No, we are not supplying any >> unicode funcs. Do you have a sample or documentation reference for what we >> need to supply? >> > > Not supplying anything is good. Was just ruling out that as a cause. > > >> I have looked at the online documentation without seeing a clear list of >> what is required. We are specifically looking to use harfbuzz to decipher >> special case grapheme breaks. >> > > Can you check with hb-shape command-line tool, to make sure what you > expect is what HarfBuzz produces there? > > Sorry it took a while to get back with you, we really do appreciate your > help. We have been looking over the code and we believe we are having a > problem with missing unicode callback functions. We are compiling HarfBuzz > with the following options turned on: > > -DHAVE_ATEXIT > -DHB_EXTERN= > -DHB_NO_UNICODE_FUNCS > -DHB_NDEBUG > > I am particularly suspicious of the HB_NO_UNICODE_FUNCS define. Am I > correct in thinking that this is suppressing the built-in harfbuzz unicode > functions, so we must supply our own? > Or just use hb-ucdn that is shipped with HarfBuzz. > Thanks so much for your continued help and support, > > -Ansel > -- behdad http://behdad.org/
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