Relating for xan:
One of the things that keeps my heart beating and my pulse flowing is knowing that one day, maybe ONE DAY Tcl can take the limelight again on the stage of web application development and maybe even curl up into a cozy little niche in the ever privacy-abrogating cabal of IoT stuff, too.
My choice of language for implementing tänzer is not just due to my love for Tcl's minimalist syntax, but also, as you intimate upon, Tcl's quite lovely FFI. I mean, that's what it was meant to do from the get-go, amirite??? Anyhow. I'd like to rewrite tänzer's guts in C, in a very mongrel2-like fashion, but perhaps less featureful but just as kind to binding by other language FFIs as itself.