Thanks. But it still gives error and that is

 (/home/vafa/texmf/tex/luabidi/luabidi.sty) <luatex-fonts.lua loaded in
0.023 se

conds> ) (test.aux)

! Font \OT1/cmr/m/n/17.28=cmr17 at 17.28pt not loadable: metric data not
found

or bad.

<to be read again>

relax

l.10 \section{مقدمه}

 ?



The error is understanable. But can it be fixed in the .lua codes or I have
to write some macros to change this?


Thanks