NAME

Acme::Anguish - Use Anguish programming language in your Raku programs

SYNOPSIS

use Acme::Anguish;

anguish "\x2061" x 72 ~ "\x2063"; # prints "H"

Anguish is a Brainfuck variant that uses invisible Unicode characters instead of traditional Brainfuck's ones.

Here's the mapping of Brainfuck operators to Anguish:

>	[⁠]	U+2060 WORD JOINER [Cf]
<	[]	U+200B ZERO WIDTH SPACE [Cf]
+	[⁡]	U+2061 FUNCTION APPLICATION [Cf]
-	[⁢]	U+2062 INVISIBLE TIMES [Cf]
.	[⁣]	U+2063 INVISIBLE SEPARATOR [Cf]
,	[]	U+FEFF ZERO WIDTH NO-BREAK SPACE [Cf]
[	[‌]	U+200C ZERO WIDTH NON-JOINER [Cf]
]	[‍]	U+200D ZERO WIDTH JOINER [Cf]

All other characters are silently ignored.

The meaning of original Brainfuck characters are as follows:

>	increment the data pointer (to point to the next cell to the right).
<	decrement the data pointer (to point to the next cell to the left).
+	increment (increase by one) the byte at the data pointer.
-	decrement (decrease by one) the byte at the data pointer.
.	output the byte at the data pointer.
,	accept one byte of input, storing its value in the byte at the data pointer.
[	if the byte at the data pointer is zero, then instead of moving the instruction pointer forward to the next command, jump it forward to the command after the matching ] command.
]	if the byte at the data pointer is nonzero, then instead of moving the instruction pointer forward to the next command, jump it back to the command after the matching [ command.

Takes a single positional argument: string of Anguish code to evaluate.

See examples directory of this distribution for example Anguish programs.

The U-FEFF character also serves as a file BOM, so avoid using it as the first character in your file.

Zoffix Znet

This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.