teika: uses expand head for split forall #218
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Goals
Faster and more solid code.
Context
The current implementation of split forall relies on a partial copy of expand head, this is done because currently expand head is not parametrized over the substitutions.
Here instead I extend
Substswith a capture function that allows split forall to be done with expand head and the substitutions captured. This approach will likely be used also on Check in the future.Related