Behnam Esfahbod

Okay, I'm doing a through clean up on the formatting of the document, so we can maintain a better formatting going forward. I'll land the fixes in small patches directly...

I'm expanding section "2.4 Joining" to explain for use of ZWJ/ZWNJ. Doing this, I noticed this paragraph: > Almost all the non-alphabetical characters are non-joining. The few exceptions will be...

> ZWJ and Tatweel are the exceptions, and I added that sentence for the sake of correctness, but we may want to omit the promise of discussing them later. Thanks,...

Regarding question about link to Unicode spec, see https://github.com/w3c/alreq/issues/103

Here's my draft for updating "2.4 Joining" to expand definitions for joining behavior, and add definition for ZWNJ and ZWJ: https://docs.google.com/document/d/1AmQK5Nj37Fl0VJbPGRtlF9b4SKRSoCZWf61iGftEvZQ/edit (Open for suggest edits and comments)

Regarding Joining Rule 3: from https://github.com/w3c/alreq/issues/91#issuecomment-275577609

U+0640 TATWEEL used as Joining Enforcer in Persian abbreviation:

I created a new issue for "Section on Hyphenation" (https://github.com/w3c/alreq/issues/108) as a follow-up from the work here. "Section on Abbreviation" (#91) would be another follow up.

TODO after #110: * Add the missing images. * Section on connection types and broken (dangling) connections. Follow up work: * More on joining segments and context-based joining in section...

Root cause must be CLDR only recognizing Eastern Arabic Numerals (Arabic-Indic digits) as the number system for the `ar` locale.