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Re:Anarki – Community-managed fork of the Arc dialect of Lisp by ScottBurson on Sunday July 15, 2018 @03:22PM (#17536590)
Yes, JavaScript also has a single namespace, like a Lisp-1.

The advantage of a Lisp-2 is that it makes macro writing easier; you can include calls to known functions in the expansion without having to deal with the possibility that those names have been shadowed.

Re:Anarki – Community-managed fork of the Arc dialect of Lisp by kazinator on Sunday July 15, 2018 @09:35PM (#17538149)
POSIX shell is dual-namespace, OTOH.

A variable foo, referenced as $foo, has nothing do with a function foo called as "foo args ...".

Imagine how stupid it would be if assigning a variable called ls prevented the ls command from working.