I tried as many variations as I can, and here are the results:
Protocol: FTP
Case 1: Unicode: Auto
File displays as: ?e???a ?a?? - ?ta? t?a???d??
Case 2: Unicode: Off
File displays as: Μελίνα Κανά - Όταν τραγουδάω
Case 3: Unicode: On
File displays as: ?e???a ?a?? - ?ta? t?a???d??
Protocol: SCP
File isn't displayed at all.
Protocol: SFTP
Case 1: Unicode: Auto
SFTP version 0: Μελίνα Κανά - Όταν τραγουδάω
SFTP version 1: Μελίνα Κανά - Όταν τραγουδάω
SFTP version 2: Μελίνα Κανά - Όταν τραγουδάω
SFTP version 3: Μελίνα Κανά - Όταν τραγουδάω
SFTP version 4: Μελίνα Κανά - Όταν τραγουδάω
SFTP version 5: Μελίνα Κανά - Όταν τραγουδάω
Case 2: Unicode: Off
SFTP version 0: Μελίνα Κανά - Όταν τραγουδάω
SFTP version 1: Μελίνα Κανά - Όταν τραγουδάω
SFTP version 2: Μελίνα Κανά - Όταν τραγουδάω
SFTP version 3: Μελίνα Κανά - Όταν τραγουδάω
SFTP version 4: Μελίνα Κανά - Όταν τραγουδάω
SFTP version 5: Μελίνα Κανά - Όταν τραγουδάω
Case 3: Unicode: On
SFTP version 0: ?e???a ?a?? - ?ta? t?a???d??
SFTP version 1: ?e???a ?a?? - ?ta? t?a???d??
SFTP version 2: ?e???a ?a?? - ?ta? t?a???d??
SFTP version 3: ?e???a ?a?? - ?ta? t?a???d??
SFTP version 4: ?e???a ?a?? - ?ta? t?a???d??
SFTP version 5: ?e???a ?a?? - ?ta? t?a???d??
Note: When the file is displayed as
'Μελίνα Κανά - Όταν τραγουδάω'
all other (non-Greek) unicode filenames were displayed incorrectly.
Off-topic: I did try to search your site before I posted, but this is what I get:
Forbidden
Your client does not have permission to get URL
/custom?q=unicode&hq=more%3Adocumentation&sa=Search&cx=015529103651104225050%3Atzfaubqd2rw&cof=AH%3Aleft%3BALC%3A%230000CC%3BBGC%3A%23FFFFFF%3BCX%3AWinSCP%3BDIV%3A%23336699%3BFORID%3A11%3BGALT%3A%23008000%3BKMBGC%3A%23FFFFFF%3BKMBOC%3A%23336699%3BKMSC%3A%23000000%3BKMTC%3A%230000CC%3BKMTVC%3A%230000CC%3BKMUC%3A%23008000%3BL%3Ahttp%3A%2F%2Fwww.google.com%2Fintl%2Fen%2Fimages%2Flogos%2Fcustom_search_logo_sm.gif%3BLC%3A%230000CC%3BLH%3A30%3BLP%3A1%3BT%3A%23000000%3BVLC%3A%23663399%3B&ad=w9&num=10&rurl=http%3A%2F%2Fwinscp.net%2Feng%2Fsearch.php%3Fq%3Dunicode%26hq%3Dmore%253Adocumentation%26sa%3DSearch%26cx%3D015529103651104225050%253Atzfaubqd2rw%26cof%3DFORID%253A11&adkw=AELymgWCQ4p5XI_ghpWrMRB1hGgpbrKmLyF9xpWQ6xH8KOFYhpJPt5gXzyJAI1QuGd_ZiRCixw7UmZMbkNDcLdWy-Saugfqmnpquud6uT_a_kexj_M95Nfc&hl=en&oe=UTF-8&ie=UTF-8&client=pub-4542587708868832&channel=9813442945&boostcse=0
from this server. (Client IP address: xxx.xxx.xxx.xxx)
We apologize for your inconvenience, but this request could not be processed.
Please click here to continue your search on Google.