Re: Passing unicode characters

["Mojca Miklavec" <mojca.miklavec.lists@gmail.com>]

On Tue, Jul 22, 2008 at 4:48 PM, Mehdi Omidali wrote:
> Hi everyone,
> Is it possible to pass a character to another in MKIV, I mean, like
> XeTeX in which one can pass one unicode character to another one (this
> is done in some mapping files with some lines in it of the form
> U+0030 <> U+06F0 )

There definitely is a way, but I don't know why you would want to do
remap numbers on font level. You need such hacks in LaTeX where
changing page numbers is a pain, but I would do that with conversions
in ConTeXt.

"arabic" (starting with U+0660) is already defined. If you need
U+06F0, you might need to do minor modification in core-con.*, but try
with normal arabic first.

\setuppagenumbering
    [conversion=arabicnumerals]

Here are the needed modifications:

core-con.lua:
    ['arabic'] = {
        0x0660, 0x0661, 0x0662, 0x0663, 0x0664,
        0x0665, 0x0666, 0x0667, 0x0668, 0x0669
    },

you need to add the same for extendedarabic
    ['extendedarabic'] = {
        0x0660, 0x0661, 0x0662, 0x0663, 0x0664,
        0x0665, 0x0666, 0x0667, 0x0668, 0x0669
    },

core-con.mkiv:
\def\arabicnumerals    #1{\ctxlua{converters.alphabetic(\number#1,"arabic")}}
\def\extendedarabicnumerals
#1{\ctxlua{converters.alphabetic(\number#1,"extendedarabic")}}

\defineconversion [arabicnumerals]     [\arabicnumerals]
\defineconversion [extendedarabicnumerals]     [\extendedarabicnumerals]

(You also need to modify core-con.mkii if you want the same feature to
be available in XeTeX afterwards.)

And then you should be able to use

\setuppagenumbering
    [conversion=extendedarabicnumerals]

You can also set up itemize to use arabic numbers. What exactly would
you like to do with those numbers? Then you can probably get a more
precise answer.

Mojca
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________