> It turns out that sqlite3_analyzer, though disguised as an ordinary executable, is really a TCL application. The main source code file for this application is tool/spaceanal.tcl. During the build process, this script is converted into a C-language string constant (using another TCL script) and added to a very simple C-language wrapper than starts a TCL interpreter and then passes the application script to that interpreter.

Haha, didn't know that. That's cool.

While most of this looks cool, the stuff about parsing vdbe.c's switch cases and assigning opcodes seems a little too much for my taste.