Emacs 用の Brainfuck 開発環境

A brainfuck development environment with interactive debugger

• syntax highlighting
• automatic indentation
• interactive debugger
• abbrev for repetition

Load “bfbuilder.el” and setup auto-mode-alist

(require 'bfbuilder)
(add-to-list 'auto-mode-alist '("\\.bf$" . bfbuilder-mode))

then bfbuilder-mode is activated when opening “.bf” files.

TAB expands the last abbrev if it exists, or indents current line otherwise. Abbrev is something like +10, or (+-)3 and they expand to ++++++++++ and +-+-+- respectively.

C-c C-c opens the debugger. You can execute the program step by step with following keybindings. Any other key closes the debugger.

l

execute an instruction

j

execute a line

L

execute a group of instructions like ++++++

g

initialize the debugger state

G

execute forward until it reaches a breakpoint (@ by default)

• implement undo (backward execution) feature for the debugger