Try emacs with slime. I think Bill Clementson's Blog has a link to a movie which shows the power of it. I use Visual Studios for my day job. And its poor when compared to emacs+slime. Not only can you goto source code of any function in list by doing Esc-. I really enjoy the fuzzy complete facility. type in a few letters and slime comes up with a likely match for functions you might want to call.
Is that the only one?
That's for Common Lisp (CL), which you may or may not want to develop in; I personally frequently choose to write in CL because it has a very large library, and because it has SLIME.
For Scheme, Emacs is also good, but there isn't something analogous to SLIME.
SLIME has go-to-definition of a function as one of its more basic features, along with auto-completion, convenient listings of arguments when you first write down a call to a particular function, and much more.
I have a quick question that I can't justify creating a new thread about. Since you brought up Lisp implementations though...
I was about to choose to write my programs with SBCL, but it looks like the Win32 port isn't yet complete. Since I'm aiming towards using Lisp in games, speed is an issue, and so is running on Windows. Would you or anyone reccomend a dialect of Lisp which is fast and runs under Windows? Even just 1/4th the speed of C would be excellent.
I believe CLISP runs on Windows. I have no idea whether this is at all practical, since I don't use Windows, but maybe you could use a Unix emulator like Cygwin and run SBCL (and your game) in that, invisibly to the user?
Scheme - quack.el (http://www.neilvandyke.org/quack/) Not so powerfull as SLIME.
AFAIK there was a support for scheme (scheme48) in SLIME. I don't know a status of it.
http://puggy.symonds.net/~deep/emacside.html - "Emacs as your IDE" (A quick start summary of core commands)
And if you find inspiration useful:
http://steve-yegge.blogspot.com/2007/02/my-save-excursion.html
http://steve-yegge.blogspot.com/2006/06/shiny-and-new-emacs-22.html
The editor is particularly important when it comes to being productive. I'm inexperienced with Lisp, and I've found a few things inside Visual Studio that I feel particularly reluctant to part with. "Go to Implementation" is one. I just move the mouse over a function call, press alt-G, and it takes me right to where that function is defined. Another is a complete list of defined procedures for the current file.
Does Lisp have an environment that has similar features?
Shawn