When parsing the example from https://tools.ietf.org/html/rfc6350#section-6.2.3:

NOTE:This fax number is operational 0800 to 1715 
  EST\, Mon-Fri.

(two spaces in the second line)

ez-vcard/0.9.7 seems to return the value This fax number is operational 0800 to 1715EST, Mon-Fri. (note the missing space before EST).

Is this intentional? As far as I have seen, the first " " means "continue from previous line", while the second " " should be taken into account for the property value (but I'm not an expert at that, I just noticed that parsing the example didn't return what I expect).

See also the examples in https://tools.ietf.org/html/rfc6350#section-3.2