[lispm]

> you'll see the definition from the REPL, which is the interesting point

whose source was put into the changes file

It's managed source code, but the source code is not in the image itself. Smalltalk tracks the connection and creates change records for changes done by meta-programming.

That's for example slightly different with a residential system like Interlisp-D / Medley, where the code is in the image itself, the editor is a structure editor actually editing it and the system can run either the source directly (via the Lisp Interpreter) or a compiled version of it.

But that method is not very popular in the Lisp world, where images are used, but changes are not tracked. Most Lisp development only track location of things. Changing sources is also not connected to quitting an image. It's a separate operation. Lisp also never bought into mostly a single development style/environment like Smalltalk did.