[e.b -- compute e
(c) 2016 Daniel B. Cristofani
http://brainfuck.org/]

>>>>++>+>++>+>>++<<[
    --[+[+++<<<<--]++>>>>--]+[<<<<]
    >[>[>>>>]+<]>-<<<<[<<<<]
    >>>>[>>[>>>>]<<<<[[>>>>+<<<<-]<<<<]>>>>>>]
    >>[>>>>]<<<<[<<+<+<]<<[
        >>>>>>[[<<<<+>>>>-]>>>>]<<<<<<<<[<<<<]
        >>-[<<+>>-]+<<[
            ->>>>[-[+>>>>-]-<<-[>>>>-]++>>+[-<<<<+]+>>>>]
            <<<<[<<<<]
        ]>[-[<+>-]]+<[
            ->>>>[-[+>>>>-]-<<<-[>>>>-]++>>>+[-<<<<+]+>>>>]
            <<<<[<<<<]
        ]<<
    ]>>>+[>>>>]-[+<<<<--]++[<<<<]
    >>>+[
            >-[
                >>[--[++>>+>>--]-<[-[-[+++<<<<-]+>>>>-]]++>+[-<<<<+]++>>+>>]
                <<-<<<<[>[<-<<<]+<]>->>>
            ]+
            >[>>>>]-[+<<<<--]++<[
                [>>>>]<<<<[
                    -[
                        ->--[
                            <->+
                        ]++<[
                            [>-<+]++[<<<<]+>>+>>-
                        ]++<<<<-
                    ]>-[
                        +[
                            <+[<<<<]>
                        ]>>>[-]>-[<+>-]
                    ]+<[>+<-]+<<<<
                ]
            ]>[<<<<]>[
                -[
                    -[
                        ->-[<<+>+>-]++++++[<++++++++>-]<.--<[>-<-]>>>>>
                        --[<]<<[<<.<]>[-]>>->>++[
                            [>>>>]+[-[->>>>+>>>>>>>>-[-[+++<<<<[-]]+>>>>-]++[<<<<]]+<<<<]>>>
                        ]+<+   <<
                    ]>[
                        -[
                            ->[--[++>>>>--]->[-[-[+++<<<<-]+>>>>-]]++<+[-<<<<+]++>>>>]
                            <<<<[>[<<<<]+<]>->>
                        ]<
                    ]
                    >>>>[--[++>>>>--]-<--[+++>>>>--]+>+[-<<<<+]++>>>>]
                    <<<<<[<<<<]<
                ]>[
                    >+<<++<
                ]<
            ]>[
                +>[--[++>>>>--]->--[+++>>>>--]+<+[-<<<<+]++>>>>]
                <<<[<<<<]
            ]>
        >
    ]>>>>
]

This program computes the transcendental number e, in decimal. Because this is
infinitely long, this program doesn't terminate on its own; you will have to
kill it. The fact that it doesn't output any linefeeds may also give certain
implementations trouble, including some of mine.