After a bit of trail and error through session.flash I changed following
indx = dict(indx = search_form.vars.indx)
redirect(URL(r=request, f='search', args=[lang, word], vars=indx))
to
redirect(URL(r=request, f='search', args=[lang, word],
vars={'indx':search_form.vars.indx}))
seems working now. (On Linux, previously was on windows)
But what was wrong with first approach!!!
