Monthly Archives: August 2007
Since it is mentioned in the CSS 2.1 specification, Firefox, Opera and Safari (and maybe more) browsers allow you to number HTML lists using Armenian numerals.
The basic algorithm followed is described in the CSS3 Lists module.
You can see some tests and results.
Some questions have arisen about a couple of details relating to the approach specified in CSS3, and we would like to get clarity from people with appropriate knowledge of this subject. Please participate in the email discussion on email@example.com if you can help.
Please provide advice on the representation of 7000 and of numbers above 9,999.
In a recent email Simon Montagu expresses the questions as follows:
[This wikipedia link], which quotes no sources, corresponds to the implementation in Firefox and Opera (upper-case characters and only Ւ for 7000).
[This link] is an article from National Mathematics Magazine, Vol. 13, No. 8 (May, 1939). I don’t have access to download the full article, but the URI shows the first page, which includes a table showing lower-case characters and only ւ for 7000.
Furthermore, there are contradictions in http://www.w3.org/TR/css3-lists/ — the prose description of the algorithm says:
“This is a simple additive system defined for the range 1 to 99999999.
The digits are split into two groups of four (if there are less than eight digits, the least significant group is filled first). Within each group, appropriate digits are picked from the following list (at most one per column) and written in descending order by value (thousands first). Any characters in the most significant group are then combined with a circumflex accent, ◌̂ U+0302.”
This implies that the circumflex has the effect of multiplying by 10000, but the following example uses the circumflex to multiply by 1000:
“Example 1: Decimal 7482951 in lower-armenian is ու̂ն̂ձ̂սջծա U+0578 U+0582
U+0302 U+0576 U+0302 U+0571 U+0302 U+057D U+057B U+056E U+0561. ”
If the example is correct, the system will only be defined up to 9,999,999 and not 99,999,999. Digits from 1000 to 9000 would also have two possible representations: either ռ ս … or ա̂ բ̂ … and it isn’t clear whether one should be preferred or either may be used.
These tests check whether a user agent supports internationalised CSS-based numbering methods for lists. More extensive tests and results have been added for Armenian, Georgian, and lower-case Greek numbering, based on CSS3 algorithms but to support the CSS 2.1 Candidate Recommendation.