brainappend

brainappend is a brainfuck derivative by User:Joaozin003, partly inspired by Vague where the braces ([ and ]) append their contents to the source code (including themselves). This makes looping much more difficult.

Instructions

Instruction	Command
+, -, <, >, , and .	Same as brainfuck
]	If the value of the current memory cell is not 0, then append the source code enclosed by this and the matching [, including the braces themselves, e.g. [>] appends [>] when ] gets ran
[	If the value of the current memory cell is 0, then jump to the matching ].

Examples

Cat program (NUL-terminated)

,[.,]

Gets a character, then appends [.,] to the source code if it is not NUL.

See also

• Brainfuck
• Vague