Leonardo de Moura 9eb4dc4a81 feat(kernel, library/elaborator, frontends/lean): improve how elaborator_exceptions are displayed in the Lean frontend ... This commit affects different modules. I used the following approach: 1- I store the metavariable environment at unification_failure_justifications. The idea is to capture the set of instantiated metavariables at the time of failure. 2- I added a remove_detail function. It removes propagation steps from the justification tree object. I also remove the backtracking search space associated with higher-order unificiation. I keep only the search related to case-splits due to coercions and overloads. 3- I use the metavariable environment captured at step 1 when pretty printing the justification of an elaborator_exception. Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>		2014-01-03 17:18:23 -08:00
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lean	feat(kernel, library/elaborator, frontends/lean): improve how elaborator_exceptions are displayed in the Lean frontend	2014-01-03 17:18:23 -08:00
lua	chore(builtin): rename nat, int and real modules to Nat, Int and Real.	2014-01-01 13:52:25 -08:00