zcwang,
An example of the item in question would make this easier, but I'll try:
Any of the delimiter characters you specify will be considered a delimiter. The docs for transforms.conf provides an example of this
[multiple_delims]
DELIMS = "|;", "=:"
Which they describe as The above example extracts key-value pairs which are separated by '|' or ';', while the key is delimited from value by '=' or ':'.
So that would use either | or ; for the field separators and either one of = or : as the field=value separator. This would match log lines like
|field1=val1;field2=val2|field3:val3;field4=val4;
and pull out of them
field1=val1
field2=val2
field3=val3
field4=val4
... View more