# Re: [NTG-context] Persian digits in math formulas

On 8/15/2013 4:22 PM, Mingranina Gingranina wrote:

Dear All,
Hello,

I am trying to use Persian digits in math formulas. My document reads:

\font\4 = {name:dejavusans} at 10pt

\font\5 = {name:dejavusans} at 7pt

\font\6 = {name:dejavusans} at 5pt

\textfont4=\4 \scriptfont4=\5 \scriptscriptfont4=\6

\Umathcode3="1"4۳

\definefontfeature [persian] [arabic]

\mainlanguage[pe]

\starttext

\definedfont[dejavusans*persian]

\setupalign[r2l]

این یک آزمایش است.

3+2=5

$3+2=5$

\setupalign[l2r]

This is a test.

3+2=5

$3+2=5$

\stoptext

However in the output the replaced digit "3" disappears.
Any help is gratefully appreciated.


For a text font you can add:

\definefontfeature [persian-fake-math] [arabic] [anum=yes]

and say:

\definedfont[dejavusans*persian-fake-math]

but ... nicer is this:

\mainlanguage[pe]

\usetypescriptfile[dejavu]

\definetypeface [dejavu] [rm] [serif] [dejavu]   [default]
\definetypeface [dejavu] [ss] [sans]  [dejavu]   [default]
\definetypeface [dejavu] [tt] [mono]  [dejavu]   [default]

\definetypeface [dejavu] [mm] [math] [xitsbidi] [default] [direction=both,rscale=1.2]

\setuptypeface[dejavu]

\starttext


\start \setupalign[r2l] \setupmathematics[align=r2l] arabic: این یک آزمایش است. \par text: 3+2=5 \par math: $3+2=5$ $\sqrt{3+2=5}$ \par \stop


\start \setupalign[l2r] \setupmathematics[align=l2r] latin: This is a test. \par text: 3+2=5 \par math: $3+2=5$ $\sqrt{3+2=5}$\par \stop

\stoptext

(see bidi-001.tex in the test suite)

Hans

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