Comment by greenpeas

  #!/usr/bin/env tclsh
  
  puts $argv

I kinda wanted to stop reading after this example. It feels dishonest to start with an example for which there is a builtin. Why didn't you show instead how to output arguments joined by a comma or some other separator instead of space. If I were to update the Go or Python examples to use another separator, it'd be just a 1-2 character change, whereas for Tcl I have no idea how that would look.