Right bracket

] is an esoteric programming language made by User:iconmaster after a discussion on the IRC channel. Its main pupose is to make a language with nothing but brackets and parentheses that are unmatched. Needless to say, ] does not accept programs that are all matched brackets.

Description
Only the characters <>{}[] are valid ] commands. If all the pairs of a certain type of bracket match, the program is invalid. In ], there is a stack in which to push and pop two symbols: " and '. There is also something called the Metastack, which holds multiple stacks.

Commands

 * ( Pushes a " onto the stack.
 * ) Pushes a ' onto the stack.
 * < Pops a value off the stack.
 * > Swaps the top 2 elements on the stack.
 * { Jumps to the first non-matching } if the top value on the stack is ".
 * } Jumps to the first non-matching (looking backwards) { if the top value on the stack is ".
 * [ Pushes the current stack onto the Metastack.
 * ] Pops a stack from the Metastack and concatenates it to the current stack.

Code Snippets
Duplicate the top element: {)}}(

Change a ' into ", and vice versa: (<{<(}}<)

Add " to the stack forever: ){){<(}}{

Implementation
A Lua implementation is available at User:Iconmaster/rb.lua.