scheme-complete.el is a single function that can be used with any Emacs scheme mode. It provides real-time, lexical-scope aware type inferencing tab-completion for any R5RS scheme, with extensibility for implementation-specific features (currently only Chicken and Gauche are customized). Gauche / Thread: [Gauche-devel] ANN: scheme-complete.el - smart tab completion 実際にEmacsに入れて動かしてみたら、かなり頭のいい補完をして