hello.erl

#!/usr/bin/env escript
%% -*- coding: utf-8 -*-
%%! +pc unicode

-module(hello).
%-mode(compile).
-export([main/1, 'hello_юникод_世界,'/0]).

main(_) ->
  % io:format("~p~n", [{io:printable_range(), io:getopts()}]),
  % 'hello_'(),
  io:setopts([{encoding,unicode}]),
  % io:format("~p~n", [{io:printable_range(), io:getopts()}]),
  'hello_юникод_世界,'(),
  io:format("~tp~n", [{"Hello, 世界, юникод"}]).

'hello_юникод_世界,'() ->
  io:format("~tp~n", [{'hello_юникод', <<"Hello, 世界; юникод"/utf8>>, "Hello, 世界; юникод"}]).

to compile it with erlc or c() in Erlang shell, the first line has to be commented out, but how about change erl compiler to ignore first line if it starts with #! ?

It's not even the 20 release, and unicode names are quickly getting unreadable and out of control 😄

@kvakvs the Java world, and JavaScript supported Unicode identifier since the very beginning (since 90s?) and supported by many other programming languages as I know; did any of those get out of control 😄 ?

➸ ./opt/node-v8.0.0-linux-x64/bin/node
> var hello_юникод_世界 = 42;
undefined
> hello_юникод_世界
42
> console.log(hello_юникод_世界);
42
undefined