thing that annoys me is there is nothing for arc that is anything close to what slime is for cl. i would settle for an inferior arc mode. my emacs skills are not good enough to take this into my own hands, i'm afraid.
Me neither, but I gave it a shot. I use it and it works, there may be bugs though. Maybe an Emacs guru will be kind enough to point out the errors I may have introduced while adapting cmuscheme.el.
it's a good start. the bugs i see immediately are it lets you erase the prompt and the prompt appears when results are printed too. i might see if there is a way to solve these problems.
the latest changes in anarki for the --no-rl option fix the problem with the repeated prompt. so now it's just that the prompt can be deleted, which is a really minor issue.