> Baseline Tcl's biggest challenge, in my opinion, was providing mechanisms to write modular code for larger programs and data encapsulation. I don't know if s

> Baseline Tcl's biggest challenge, in my opinion, was providing mechanisms to write modular code for larger programs and data encapsulation. I don't know if something about tcl's design precluded lexical scoping and a normal "var" keyword. But "upvar" definitely seems like a smell.