if (asciiCompat == null) {
throw runtime.newConverterNotFoundError("no ASCII compatible encoding found for " + strOrEnc);
}
return encodingService.convertEncodingToRubyEncoding(asciiCompat);
}
@JRubyMethod
public IRubyObject last_error(ThreadContext context) {
RaiseException re = EncodingUtils.makeEconvException(context.runtime, ec);