[css-shapes] polygon with one or two coordinate pairs

Hi,

The specification currently does not mention what should happen if an author just specifies one or two pairs of coordinates with the polygon() function. At the moment it is not clear if you need to specify at least one pair at all:

""
polygon() starts with an optional <fill-rule> argument, followed by a list of arguments consisting of <length> or <percentage> pairs.
""

For two pairs, do authors see the text wrap around this line between these two coordinates? I would assume so, but just want to be sure.
For one pair, does the text wrap around this point, or do we have any different behavior?

If a line or point defined by the polygon is between two lines (set with line-height maybe), do we still se wrapping behavior? Is there even something like spacing between lines?

Greetings,
Dirk