Slashdash at the start of a KDL file (KDL2 grammar)

[alightgoesout]

Hello,

While working on KDL4J, I noticed that the grammar for KDL 2.0 does not seem to allow a slashdash right at the start of the document:

plain-line-space := newline | ws | single-line-comment
line-space := plain-line-space+ ('/-' plain-node-space* node)?

We can see that at least one plain line space is required before a slashdash of a node and plain line space cannot be empty. This does not seem right, especially since several test cases seem to imply that it is perfectly fine (e.g., slashdash_full_node.kdl or slashdash_only_node.kdl).

Am I not reading the grammar right ?