xpath // abbreviation does not work other than on the top-level

[olofhagsand]

When using xpaths in clixon (eg in get-config :XPATH) you cannot use "//" other than on the top-level.
That is, the following works:
//abc
But not the following:
/abc//foo
However the actual axis function seems to work:
/abc/descendant-or-self::node()/foo

which means that the abbreviation seems broken, not the underlying function.
Workaround: use /descendant-or-self::node()/ instead