For Jalali dates and Persian numbering, I can get the following to work:

\persiandecimals{\rawdate[jalali:to,d]}/\persiandecimals{\rawdate[jalali:to,M]}/\persiandecimals{\rawdate[jalali:to,y]}

but the following does not work and throws an error:

\persiandecimals{\currentdate[jalali:to,d]}

If I want to get the output for different date, option 1 below works and option 2 does not.

---------
% option 1
\persiandecimals{\begingroup\setdate[m=5]\rawdate[jalali:to,y]\endgroup}
% option 2
{\begingroup\setdate[m=5]\persiandecimals{\rawdate[jalali:to,y]}\endgroup}
----------

does \setdate expand to something non-empty?

note that with the above ideas, we cannot get "mm" with leading zeros to work because
\persiandecimals drops the leading zero. the following ugly hack works if I insist on using
\currentdate to format the output and I want Indic digits.

--------
\startluacode
  function persmap(s)
  local stream  = tostring(s)
  local mapping = languages.decimals.persian
  local gsub    = string.gsub
  return mapping and gsub(stream, ".", mapping) or stream
  end
\stopluacode

\def\persmap#1{\ctxlua{context(persmap("#1"))}}
\def\mycurrentdate[#1]{\persmap{\rawdate[#1]}}
\mycurrentdate[jalali:to,dd,/,mm,/,y]
--------

even with \mainlanguage[fa] and \language[fa] I don't get the month names translated to persian labels. why?

------
\mainlanguage[fa]
\language[fa]
\starttext
\currentdate[month:jalali]
\stoptext
-----



On Fri, Feb 21, 2025 at 12:13 PM Wolfgang Schuster <wolfgang.schuster.lists@gmail.com> wrote:
Am 20.02.2025 um 19:53 schrieb Mohammad Hossein Bateni:
> Any thoughts why the following doesn't work?
>
> \currentdate[d:persiannumerals]
>
> It just outputs the normal digits.
>
> In contrast, these work:
>
> \currentdate[d:abjadnumerals]
> \convertnumber{persiannumerals}{\normalday}

persiannumerals aren't considered a conversion method for the underlying
Lua mechanism while there exists a method for \convertnumber on the TeX
side.

Both system are separate (to a certain degree) but the TeX side borrows
the conversion vectors from the Lua mechanism.

Wolfgang

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