[charmod-norm] Arabic pair of combining marks on the same side appear same whatever their position.

ntounsi has just created a new issue for https://github.com/w3c/charmod-norm:

== Arabic pair of combining marks on the same side appear same whatever their position. ==
Section 2.2.1 > Example  of canonical equivalence > Order of combining marks > "q̣̇ vs.q̣̇" example :
At the beginning  "... the order of the combining marks might not represent a distinct character." seems to contradict "The order of combining diacritics on the same side have a positional meaning." at the end of the same pargarphe. (To my understanding of "positional meaning")

Anyway, this last sentence, "The order of combining diacritics on the same side have a positional meaning." might be true for the example "A base letter A followed by two combining marks (U+030A COMBINING RING ABOVE and U+0301 COMBINING ACUTE ACCENT)", i.e.  Ǻ vs. Á̊. But consider Arabic combining marks like Fatha (U+064E)  +  Shadda (U+0651). They both appear on the same side above a letter Beh (U+0628), say,  and Fatha is _always_ above the shadda  ![bfs](https://user-images.githubusercontent.com/15004708/38433938-8d9b2b28-39c4-11e8-86ff-6d6c5a4b12cc.jpeg) whatever the  order of combining marks :
Beh + Fatha + Shadda   
![b-f-s](https://user-images.githubusercontent.com/15004708/38434024-dff1839a-39c4-11e8-873f-1be040609bf8.jpeg)
or
Beh + Shadda + Fatha  
![b-s-f](https://user-images.githubusercontent.com/15004708/38434033-e929c800-39c4-11e8-9159-e69978c0ceb6.jpeg)

Is this what you mean by positional meaning?
Here we have two combining marks  on the same side of a letter, but without "positional meaning".


Please view or discuss this issue at https://github.com/w3c/charmod-norm/issues/162 using your GitHub account

Received on Friday, 6 April 2018 17:29:05 UTC