Column 'extra' is treated wrongly

[sebix]

If the tableformat includes the entire column 'extra', this code falsly creates an ExtraColumn with rest = '', but instead should treat it like a normal IntelMQColumn:

intelmq-mailgen/intelmqmail/tableformat.py

Lines 179 to 185 in 3749425

	if isinstance(col, tuple):
	intelmq_field, column_title = col
	first_component, sep, rest = intelmq_field.partition(".")
	if first_component == "extra":
	return ExtraColumn(column_title, rest)
	else:
	return IntelMQColumn(column_title, intelmq_field)

As a result, if a user has this column specification:

("extra", "extra")

mailgen actually accesses extra. (or written differently: extra[''] and the result in the attachment is an empty string.

The workaround is this column specification:

IntelMQColumn("extra", "extra"),