Hi,

attached a
org-table-import.patch

removes limitations of hard-coded separator char(s).
`org-guess-separator' accepts and detects all chars as field separators.
It works based on the assumption, that char looked for appears in equal 
number at each row.

Also a default value
`org-table-import-default-separator' should make
guessing faster in some cases.

Best regards,

Andreas

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