Depends on how much C you need, it might make more sense to write a proper Tcl extension and it might make sense to just embed Tcl/Tk but having this middle gro

Depends on how much C you need, it might make more sense to write a proper Tcl extension and it might make sense to just embed Tcl/Tk but having this middle ground is nice because swinging to the fences is rarely the best course of action. Critcl looks to be quite nice in those situations when Tcl/Tk is almost but not quite, you get the speed and ease of Tcl/Tk but a little more as well. The big gotcha looks to be having the foresight of identifying when writing a proper Tcl/Tk extension or switching language is the better plan, but this is almost always the big gotcha.