[CSV] Invalid char between encapsulated token and delimiter

Hi all,

I have a web application which uses Apache Commons CSV for processing 
uploaded CSV files.

Occasionally, users are experiencing an error when using this feature:

     "IOException reading next record: java.io.IOException: (line 6) 
invalid char between encapsulated token and delimiter"

On inspecting the problematic CSV file, however, line 6 looks just fine.

By gradually modifying this CSV along with another which uploaded fine, 
I eventually had two CSV files that were visually identical.  Though one 
would still throw the above error.

Whilst both appeared identical, I noticed that one was 3 bytes larger.  
It turns out that the problematic CSV begins with "<EF><BB><BF>" 
(discovered using Linux 'less' command).  That's a byte-order mark 
(BOM).

Here is my section of code that reads these CSVs:

     Reader in = new FileReader(crewList);
     CSVFormat csvFormat = CSVFormat.DEFAULT.builder().build();
     Iterable<CSVRecord> records = csvFormat.parse(in);
     Iterator<CSVRecord> iterator = records.iterator();

1) I'm puzzled as to why the presence of a BOM seems to have resulted in 
an erroneous error directed at line 6.

2) If the presence of a BOM is indeed the culprit, how best to resolve 
this without creating a problem for CSVs not containing a BOM.

Your suggestions are much appreciated.

Kind regards,

Chris.