Writing to stderr

[Caligari]

I understand that I can point print to a different writer, but I don't know what writer to use in order to get my output to appear on stderr.

I'm sure it is something obvious, but I don't know .NET well enough to be able to work out what to do at that end, and I can't immediately see anything in Cobra itself which gives me a stderr stream.

[Charles]

On .NET, Console.error is a reference to stderr. It's type is TextWriter.

You can use the print statement on it like so:

# simple case:
err = Console.error to !
print to err, 'x = [x]'

# redirect
print to err
    print "error:"
    obj.foo
    obj.bar

Or you can use methods on it like: Console.error.writeLine('x = [x]')

I don't know under what circumstance Console.error may be nil/null. It's up to you if you want to check for that.

See also: http://msdn.microsoft.com/en-us/library/system.console.error.aspx