2.2 Direction needs section about "Numbers"

[michael-aka-mmh]

I already learned that decimal numbers use the same positions as in other languages, i.e. the notation is the same. But in the real world there are applications of numbers like e.g. telephone numbers which require localization. E.g. a telephone number separated by spaces entered as "+49 (555) 123 4567" may appear as "4567 123 (555) 49+" which is possibly wrong. I suggest to collect more samples of real world numbers and their appearance in Arabic documents.

[mostafah]

That’s a valid point, but talking about control marks can get too complicated very quickly. We might be better off just mentioning this issue, but referring to another document if one exists.

[ntounsi]

Might also mention this issue in the section about numerals, and refer to another document with more details.

[shervinafshar]

We can briefly talk about the issue in the section on numerals, but the discussion of how this issue can be circumvented in the real world is, as Mostafa mentioned, out of scope. W3C documents on bidi can be referred to for further reading.

[ntounsi]

Now one can find phone numbers like +1.234-456-7890 or +1.234.456.7890

BTW, some W3C press releases are translated into Arabic. Phones are now using a dot to separate numbers. Before that, I used to span them with ltr direction to get the right display. <span dir="ltr">+1.234 456 7890</span>

[ntounsi]

This point is mentioned in the draft on numerals https://github.com/w3c/alreq/wiki/Arabic-numerals-%28Draft%29