encoding issues dependent on environment settings about uglifier HOT 4 OPEN

With the recent resolution of #47, which was causing encoding to fail with UTF-8 chars, I just ran into the same problem with utf8 characters getting replaced by question marks in the minified javascript.

Uglifier 2.3.1 Rails 4.0.1
also using rake assets:precompile
Doing the precompile locally on my Windows 7 machine, did not confirm on anything else.

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Well I can confirm it is 100% a locale-related issue for me. For example, I tried setting up the locale that was being forwarded through SSH to my server, and after that the problems went away. But I think uglifier should not depend on these settings.

I must note that yui-compressor does actually exhibit a similar problem. In the case I was trying at first, yui-compressor had no problems (while uglifier did), but I later came across the same problem with a different project, and yui-compressor couldn't handle it either.

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Hey,
i think i have a similar issue caused by uglifier.
In production the app does not run on IE9 due to an invalid character, this is probably caused by uglifier. How did you work around this? Is it possible to limit the charset uglifier is using?

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Uglifier has ascii_only output option, but it is set to true by default since 2.5.0. If you run into invalid output, it might be worth checking if UglifyJS produces similar output.

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