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# NAME

Acme::Anguish - Use Anguish programming language in your Perl 6 programs

# SYNOPSIS

```perl6
use Acme::Anguish;
anguish "\x2061" x 72 ~ "\x2063"; # prints "H"
```

# DESCRIPTION

*Anguish* is a [Brainfuck](https://en.wikipedia.org/wiki/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.

# EXPORTED SUBROUTINES

## `anguish`

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

# EXAMPLES

See `examples` directory of this distribution for example *Anguish* programs.

# BUGS AND CAVEATS

The `U-FEFF` character also serves as a file
[BOM](https://en.wikipedia.org/wiki/Byte_order_mark), so avoid using it
as the first character in your file.

----

# REPOSITORY

Fork this module on GitHub:
https://github.com/zoffixznet/perl6-Acme-Anguish

# BUGS

To report bugs or request features, please use
https://github.com/zoffixznet/perl6-Acme-Anguish/issues

# AUTHOR

Zoffix Znet (http://zoffix.com/)

# LICENSE

You can use and distribute this module under the terms of the
The Artistic License 2.0. See the `LICENSE` file included in this
distribution for complete details.