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chore(todo): update todo list

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Leonardo de Moura 2013-11-07 15:24:09 -08:00
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@ -6,10 +6,10 @@ To Do List
- ~~Refactor the elaborator code. The elaborator will be one of the main data-structures in Lean. The elaborator manager should be shared between different frontends.~~
- ~~Reconsider whether meta-variables should be in `expr` or not. Metavariables (aka holes) are fundamental in our [design](design.md).~~
- ~~Improve Lean pretty printer for Pi's. For example, it produces `Var a : Pi (A : Type) (_ : A), A` instead of `Var a : Pi (A : Type), A -> A`.~~
- Decide what will be the main technique for customizing Lean's behavior. The elaborator manager will have many building blocks that can be put together in many different ways. Possible solutions:
- We design our own configuration language.
- We use an off-the-shelf embedded language such as [Lua](http://www.lua.org).
- We use Lean itself.
- ~~ Decide what will be the main technique for customizing Lean's behavior. The elaborator manager will have many building blocks that can be put together in many different ways. Possible solutions:~~
~~- We design our own configuration language.~~
~~- We use an off-the-shelf embedded language such as [Lua](http://www.lua.org).~~
~~- We use Lean itself.~~
- Module for reading [OpenTheory](http://www.gilith.com/research/opentheory/) proofs.
- ~~Higher-Order unification and matching~~.
- Rewriter (and Rewriter Combinators).