Weirdly, everybody whines about the different quoting mechanisms and the use of upvar and uplevel in TCL. Coming from scheme, it's a breath of fresh air: Macros

Weirdly, everybody whines about the different quoting mechanisms and the use of upvar and uplevel in TCL. Coming from scheme, it's a breath of fresh air: Macros are no longer a special class! everything is unified! Sure, you lose some abstraction power with the quoting, but that's AWESOME! And if you're wondering why lisp didn't do this, it used to, in the form of fexprs. Although there was never any equivalent of uplevel, AFAIK. Some lisps, like newlisp (which thinks we'll LOVE solving the funarg problem again) and picolisp (which also has a version of uplevel, but apparently thinks that alists are an acceptable replacement for hashmaps and other data structures, so fuck that noise), actually still have this, but it lost favor in the mainstream, partly due to the Wand paper, which proved that it makes many common compiler optimizations impossible.