Presumably he could write his own code- and data-munging tools in Smalltalk and invoke them straight from the running image -- kinda like what you can do with Emacs Lisp.
That's fascinating. At least Emacs comes with an editor, can't say as much for Squeak. I mean, it has AN editor, its just not very good compared to something like Emacs or vi, and I'm talking editor functionality, not everything else. It's more like a lightly enhanced Text Area.
But maybe he put a lot of work into it to be a better Perl editor.
But maybe he put a lot of work into it to be a better Perl editor.