Brainfish

Brainfish is a cross between Brainf*ck and Deadfish.

Commands

The brackets ([ and ]) from brainf*ck work the same, and the comma (,) and dot (.) from brainf*ck also work the same, and the < and >, but no other commands from brainf*ck work. Every command from Deadfish works, but on the cell at pointer.

An aperçu shall present all available facilities:

Command	Description	Provenance
[	If the current cell value equals 0, move past the matching ]	brainf*ck
]	If the current cell value does not equal 0, move past the matching [	brainf*ck
>	Move the cell pointer one step to the right	brainf*ck
<	Move the cell pointer one step to the left	brainf*ck
,	Query the standard input for a character and store its ASCII code in the current cell	brainf*ck
.	Output the character whose ASCII code matches the current cell value	brainf*ck
i	Increment the current cell value	Deadfish
d	Decrement the current cell value	Deadfish
s	Square the current cell value	Deadfish
o	Output the current cell value in its verbatim numeric form	Deadfish

Examples

Cat

This cat program queries the user for a character and prints its ASCII code:

,o

Infinite cat

An infinite cat program, the same terminates on a user input of the null character, assumes the following form:

i[,.]

hi

>>>iiiiiiiiii[<<<iiiii[>ii<d][d]>[d>i<]>>d]<iiii.i.

Interpreter

• Common Lisp implementation of the Brainfish programming language.