119753 - Better (cycling) default list-style-type for ULs (unordered lists)

Status: NEW

(Core :: CSS Parsing and Computation, enhancement, P4)

Description

[Matthew T (active 1999-2002)]

To reproduce:
1.  Open the attached testcase.

What you see:
*   1 reply beneath your current threshold.
    o   2 replies beneath your current threshold.
        #   3 replies beneath your current threshold.
            #   4 replies beneath your current threshold.
                #   5 replies beneath your current threshold.
                    #   6 replies beneath your current threshold.
                        #   7 replies beneath your current threshold.
                            #   8 replies beneath your current threshold.
                                #   9 replies beneath your current threshold.

What you should see:
*   1 reply beneath your current threshold.
    o   2 replies beneath your current threshold.
        #   3 replies beneath your current threshold.
            []  4 replies beneath your current threshold.
                *   5 replies beneath your current threshold.
                    o   6 replies beneath your current threshold.
                        #   7 replies beneath your current threshold.
                            []  8 replies beneath your current threshold.
                                *   9 replies beneath your current threshold.

where
*   = disc
o   = circle
#   = filledsquare
[]  = square

This is more typographically elegant, as well as making it easier to see where 
you are in highly nested lists.

Because Mozilla's rendering of HTML depends so heavily on CSS, this RFE would 
require implementation of two enhancements:
(1) a `filledsquare' (or `-moz-filledsquare') value for the list-style-type
    property;
(2) a modulo selector method for calculating the appropriate list-style-type no
    matter how highly nested the list is.

Then the current UL code in html.css can be changed to something like the 
following:
(ul,menu,dir)%4 (ul,menu,dir)
    {list-style-type: disc;}
(ul,menu,dir)%4 (ul,menu,dir) (ul,menu,dir)
    {list-style-type: circle;}
(ul,menu,dir)%4 (ul,menu,dir) (ul,menu,dir) (ul,menu,dir)
    {list-style-type: filledsquare;}
(ul,menu,dir)%4 (ul,menu,dir) (ul,menu,dir) (ul,menu,dir) (ul,menu,dir)
    {list-style-type: square;}

Problem occurs with:
*   Mozilla 2001020908, Mac OS 9.1

Problem does not occur with:
*   Microsoft Internet Explorer 5.0, Mac OS 9.1

Comment 1

[Matthew T (active 1999-2002)]

Attachment: testcase

Comment 2

[Boris Zbarsky [:bzbarsky]]

Over to CSS, since the new list style is trivial; the modulo selector is what's
hard.... the WG has been thinking of adding something like that to CSS3, but it
hasn't happened yet.

Comment 3

[Ioana (away)]

Issue still reproducing on:
Mozilla/5.0 (X11; Linux i686; rv:26.0) Gecko/20100101 Firefox/26.0