Khaled Hosny wrote:
> On Sat, Aug 23, 2008 at 12:46:47AM +0300, Khaled Hosny wrote:
>> It seems that there is a bug in converters.alphabetic function,
>> converters.alphabetic(0,"arabic") returns the western 0 (no matter what
>> is the selected language) while converters.alphabetic(1,"arabic") gives
>> the Arabic 0 not 1 and so one i.e. it looks like as if it starts
>> counting from zero.
>
> I finally got myself to understand some lua code.
>
> I think the problem is that lua tables start counting from 1 not 0,
> getting the value of key 0 from code table will give nil while 1 will
> give the value of 0 (first key), so the solution would be incrementing n
> by 1 in:
>
> local function do_alphabetic(n,max,chr)
> n = n + 1 -- to get the correct key
> if n > max then
> do_alphabetic(floor((n-1)/max),max,chr)
> n = (n-1)%max+1
> end
> characters.flush(chr(n))
> end
>
> This does work for the case of Arabic, but I don't know about others
> (especially greek and slovenian which look different)
we cannot change that function without breaking other things
there are several ways to convert, one is using the languages.counters
table and i don't know if the arabic entries in it are right (i just
found out that the greek vector is uppercase while it should be
lowercase but i'll make a fix for that)
>rgrep arabicn *.tex
core-con.tex 671: \defineconversion [arabicnumerals] [\arabicnumerals]
core-con.tex 672: \defineconversion [persiannumerals] [\arabicnumerals]
>rgrep arabicn *.mkiv
core-con.mkiv 20: \def\abjadnumerals
#1{\ctxlua{converters.arabicnumerals(\number#1)}}
core-con.mkiv 21: \def\abjadnodotnumerals
#1{\ctxlua{converters.arabicnodotnumerals(\number#1)}}
core-con.mkiv 22: \def\abjadnaivenumerals
#1{\ctxlua{converters.arabicnaivenumerals(\number#1)}}
core-con.mkiv 87: \def\arabicnumerals
#1{\ctxlua{converters.alphabetic(\number#1,"arabic")}}
core-con.mkiv 99: \defineconversion [arabicnumerals] [\arabicnumerals]
>
the abjad number converters are definied differently (based on specs by
idris)
so, if the 0/1 offset is a problem then we need to fix the tables, not
the function (unless arabic follows a different logic, as chinese does)
Hans
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