MultiPoint ZM WKT does not round-trip

[mwtoews]

This WKT parse and output is unexpected:

$ ./bin/geosop -a "MULTIPOINT ZM (0 0 4 3, 1 2 4 5)" -f wkt
MULTIPOINT Z (0 0 4, 1 2 4)

The expected result is created with:

$ ./bin/geosop -a "MULTIPOINT ZM ((0 0 4 3), (1 2 4 5))" -f wkt
MULTIPOINT ZM (0 0 4 3, 1 2 4 5)

This means than WKT does not round-trip:

$ ./bin/geosop -a "MULTIPOINT ZM ((0 0 4 3), (1 2 4 5))" -f wkt | ./bin/geosop -a stdin -f wkt
MULTIPOINT Z (0 0 4, 1 2 4)

WKB seems to round-trip OK:

$ ./bin/geosop -a "MULTIPOINT ZM ((0 0 4 3), (1 2 4 5))" -f wkb | ./bin/geosop -a stdin.wkb -f wkt
MULTIPOINT ZM (0 0 4 3, 1 2 4 5)

[mwtoews]

Similar with MultiPoint M:

$ ./bin/geosop -a "MULTIPOINT M (0 0 3, 1 2 5)" -f wkt
MULTIPOINT (0 0, 1 2)
$ ./bin/geosop -a "MULTIPOINT M ((0 0 3), (1 2 5))" -f wkt
MULTIPOINT M (0 0 3, 1 2 5)