Metafuck

Metafuck is a family of esoteric programming languages. Every single language in the family is a version of Brainfuck.
== Overview ==
The family consists of infinite amount of languages, named Metafuck-X, where X is any string of any length (including 0). These strings are called dimensions. A dimension string consists of digits, letters (lower- and uppercase), punctuation, spaces, tabs, newlines (LF), carriage returns, vertical tabs and form feeds. The programs can only consist of digits, letters (lower- and uppercase), punctuation, spaces, tabs and newlines (LF).
* Not all languages are turing-complete; for example, dimension "" (empty) will do nothing regardless of the program.
== Dimension logic ==
Dimension strings are actually just numbers in base 100 that get converted into base 2. Then, ones and zeroes are mapped to generate a specific rule set, which is passed to an L-system, where the final Brainfuck program is generated.
== Dimension examples ==
=== Brainfuck ===
Here's a dimension that acts the same as Brainfuck (359 bytes):
 15w KGy_\f<t=xXE g7$qb@`V4-[PaVY9C(^
 v6wush/Q
 cz9'A{gM
 Z[	IH~p9aFT%,M%wpbjivL1qr�{	p;{&A!aYZ-#y
 Ab_@4V`4J?x<m�A�>Tlu�!RA/{>j*@IP�A{9jtwN+?Dk)I)+4A'FLEFg,b#Z';>zA&nQF()2*z5b.
 30V]pPbb~�H	2pa[uNU.|"nu&isi0n-nxp�=�zKN`p7EIm��yBhad,V7}K	b XeTsp?N@wukGxs<bG+yrv~$CHfS�CV21,Qh(U
 c?,>rqTzt?3 
 {X cS)}C^%r	Bn[@O|w[l(DB(w&U|:9Cb9a2H(._ZVrAY4Y9MLLP3B]/jLbx
 N1S5j~Y
Note: this might be incorrect because of the presence of the following characters: \x0b \x0c
This looks.. weird. Here is the same thing in base 10:
1053294464234888515792980335940941607652611838957047484511057600938698797310632302817765296123509683690164896946184954443932509104155667348663225111918314701262798909525789067366210606174643496361188830457890445823379229836988155213099625336769081197183445199369009192932497282392070447072043668414740411673116461687881353667235241697002713505117597030057862551111193984395022510843049567591632330671828180023742333259980983546498925074044229898343717101373570792469511945914552825824983323020423328791142723427319365384315549838570201735217695696128273812726553529820394979059941254709238876627953723848350913284216939376932675691770938110910024369758861572736600460094847475103378676194711339749015405199360
If you convert this number to binary, you will see a lot of zeroes in the beginning. Behind the scenes, there are a lot more.
This is a minimal 1:1 recreation: all characters that are not in the brainfuck charset are mapped to nothing, and if they are in the charset, they get mapped to self.
=== Every character is left as-is ===
A dimension where every character is mapped to self is 1431 bytes. You can view it here (pastebin).
=== Newline mapped to .+[.+] ===
A dimension where the newline character is mapped to .+[.+] and everything else is mapped to nothing looks like this (33 bytes):
 5qUeWyr\~y`X1CINHli>o(!�RVA5
 XG.[
Note: there is the following character: '\x0c' after the symbol '!'
== Implementations ==
=== JavaScript (Online) ===
There is an ongoing developement of an online interpreter that uses JavaScript. It is not public version of it yet.
=== Python ===
Original implementation: metafuck.py (autopep8 / pastebin)
Metafuck code is piped. The dimension is specified via command line arguments. Example usage:
 B:\> rem Windows
 B:\> type program.mf | python metafuck.py dimension.txt
 $ /* UNIX-like systems */ 
 $ cat program.mf | python3 metafuck.py dimension.txt
Category:Languages
Category:Brainfuck derivatives
Category:Low-level
Category:Implemented