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by bitwize 1646 days ago
One of Tcl's most popular object systems is called incr Tcl. Tcl allows some Lisp-like metaprogramming (albeit effectively all stringly-typed, and with fexpr crawling horrors -- where it's really easy to confuse metalevels -- and weird scoping rules), so incr Tcl can be, and is, implemented in Tcl.