Writing Deskshell commands

List mark

Deskshell commands which take lists as arguments, for example list intersect and list count, use the list mark ``::'' to separate each argument.

For example:

   list count a b c :: d e f g

gives the result:

   ( 3 4 )

If the list mark ``::'' was not included, for example in the form:

   list count $list1 $list2

the result would be a single value, as the values of the two variables would combine to become a single list.