98488 - Incorrect OL TYPE="I" rendering of roman numerals

Status: VERIFIED DUPLICATE of bug 46140

(Core :: Layout, defect)

Description

[Iván Rivera]

There are two issues with rendering of roman numerals as indexes of ordered
lists (OL):

1.- The indentation amount for the index is fixed. Therefore, relatively small
index values (such as XXVII=27) overflow by the left in normal circumstances
(default font face and size).

2.- Values bigger than 3999 (=MMMCMIX) appear as M? (for 4000), M?I (for 4001),
etc. The correct display should be (AFAIK, I might be wrong) IV (overlined) for
4000, IV (overlined) I for 4001... The overline indicates multiplication by 1000.

Please see http://www.deadline.demon.co.uk/roman/intro.htm for a primer on roman
numerals, which indicates an alternative display for bigger-than-3999 numbers.

Comment 1

[Iván Rivera]

Attachment: Minimal test case showing both problems

Comment 2

[Iván Rivera]

One possible representation for bigger-than-3999 numbers:

<span style="text-decoration:overline">IV</span>I=4000
<span style="text-decoration:overline">MDCLXVII</span>CDXCIX=1667499

As you can see, the algorithm applies for numbers bigger than 3999:

* Divide the number by 1000.
* Transform the quotient to roman numerals, and add a overline to it (CSS).
* Transform the remainder to roman numerals, and append it to the quotient.

If the number is bigger than 3999999 we'll run into problems. Romans used a
double overline, but there is no such decoration in CSS... There is an
alternative parenthetical notation: each number enclosed in parentheses gets
multiplied by 1000. So 4000000 is ((IV)), and 2^24 is ((XVI))(DCCLXXVII)CCXVI.
This is somewhat ugly, but saves the day...

Comment 3

[Christopher Aillon (sabbatical, not receiving bugmail)]

Reporter: please keep bugs to 1 issue per bug.  Since there are two issues here,
I am going with the first issue which happens to be what the summary describes.

The first issue is a dupe of bug 46140, so I'm marking.

The second issue could be a good idea but it should be it's own separate bug if
it's not already filed.

*** This bug has been marked as a duplicate of 46140 ***

Comment 4

[Christopher Aillon (sabbatical, not receiving bugmail)]

I just noticed this was in the HTML Element component which is deprecated. 
Moving to Layout.  See bug 88132 for details.

Comment 5

[Moied]

Making verified duplicate of 46140