Word segmentation is incorrect

[robertbastian]

WB3c and WB3c interact in the same way LB8a and LB9 do.
A correct implementation of that would require either duplicating every state as in #4389, or hoisting the two rules into the logic as in #5001.

The latter seems more attractive, both for data size and sanity of the maintainer; note that since rule_segmenter.rs is shared with extended grapheme cluster and sentence breaking, this will require passing a flag for that logic.

[sffc]

@eggrobin What is left on this issue?

[eggrobin]

What is left on this issue?

All of it? It was created to allow us to close the specific issue reported in #4417, but word segmentation is still wrong and hasn’t changed since this was filed.