[erlang-questions] escript argument encoding

Reid Draper <>
Thu Mar 20 23:42:42 CET 2014


Thanks. +fnu solved it for me.

Reid

On Mar 20, 2014, at 1:42 PM, José Valim <> wrote:

> Take a look at the +fnu flags:
> 
> http://erlang.org/doc/man/erl.html
> 
> 
> 
> José Valim
> www.plataformatec.com.br
> Skype: jv.ptec
> Founder and Lead Developer
> 
> 
> On Thu, Mar 20, 2014 at 7:38 PM, Reid Draper <> wrote:
> I’m running into an issue where OSX and Linux seem to treat the command-line arguments to an escript differently. Using the following escript:
> 
> #!/usr/bin/env escript
> %% -*- erlang -*-
> %%! +pc unicode
> 
> main([Args]) ->
>     io:setopts([{encoding, utf8}]),
>     io:format("~w~n", [Args]),
>     io:format("~ts~n", [Args]).
> 
> Both my OSX and Linux (Ubuntu 13.10) boxes have their LANG set to en_US.UTF-8. I’m running the escript like so:
> 
> ./sample.escript سلام
> 
> On OSX, the escript seems to treat `Args` as a list of unicode code-points:
> 
> ./sample.escript سلام
> [1587,1604,1575,1605]
> سلام
> 
> On Linux, it seems to treat the input as a list of UTF-8 bytes, where each byte is turned into an integer. The Erlang unicode guide calls this a 'Lists of UTF-8 Bytes' [1].
> 
> ./sample.escript سلام
> [216,179,217,132,216,167,217,133]
> سلام
> 
> How does I get both OSX and Linux to treat the input of the escript as a list of code-points?
> 
> Thanks,
> Reid
> 
> [1] http://www.erlang.org/doc/apps/stdlib/unicode_usage.html
> 
> 
> 
> 
> 
> 
> 
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> 
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> 
> 

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