The SQLite author is a big Tcl user. I believe the codebase is primarily Tcl when you include the test suite, though the core implementation is obviously a C library.
D Richard Hipp is his name and he has some nice talks online. He uses his own text editor and chat app he wrote in Tcl to maintain the project and communicate with other developers.
From what I understand, D Richard Hipp's appreciation of Tcl is the reason SQLite has dynamic typing. (I believe I heard this in one of his talks that's on youtube, which are excellent.)
That makes sense. I heard him say that the pain points of dynamic typing are mostly just people using it for web apps that eventually have to migrate to Postgres and the like, causing some headaches because client server DB’s are much more rigid, causing errors.
I agree that his talks are great! He’s such an enthusiastic guy.
I hope SQLite will adopt default foreign keys and WAL sometime soon, but I understand that he needs to keep it as backwards compatible as possible.
D Richard Hipp is his name and he has some nice talks online. He uses his own text editor and chat app he wrote in Tcl to maintain the project and communicate with other developers.