GNU Smalltalk comes with its own Emacs mode for hacking Smalltalk code. It also provides tools for interacting with a running Smalltalk system in an Emacs subwindow.
Emacs will automatically go into Smalltalk mode when you edit a Smalltalk file (one with the extension .st).
|• Editing:||Autoindent and more for GNU Smalltalk.|
|• Interactor:||Smalltalk interactor mode.|