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- move_location to proofs/logic.
- intro_pattern_naming to Namegen.
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We remove most of what was deprecated in `Term`. Now, `intf` and
`kernel` are almost deprecation-free, tho I am not very convinced
about the whole `Term -> Constr` renaming but I'm afraid there is no
way back.
Inconsistencies with the constructor policy (see #6440) remain along
the code-base and I'm afraid I don't see a plan to reconcile them.
The `Sorts` deprecation is hard to finalize, opening `Sorts` is not a
good idea as someone added a `List` module inside it.
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In #6092, `global_reference` was moved to `kernel`. It makes sense to
go further and use the current kernel style for names.
This has a good effect on the dependency graph, as some core modules
don't depend on library anymore.
A question about providing equality for the GloRef module remains, as
there are two different notions of equality for constants. In that
sense, `KerPair` seems suspicious and at some point it should be
looked at.
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We bootstrap the circular evar_map <-> econstr dependency by moving
the internal EConstr.API module to Evd.MiniEConstr. Then we make the
Evd functions use econstr.
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Ssripats and Ssrview are now written in the Tactic Monad.
Ssripats implements the => tactical.
Ssrview implements the application of forward views.
The code is, according to my tests, 100% backward compatible.
The code is much more documented than before.
Moreover the "ist" (ltac context) used to interpret views is the correct
one (the one at ARGUMENT EXTEND interp time, not the one at TACTIC
EXTEND execution time). Some of the code not touched by this commit
still uses the incorrect ist, so its visibility in TACTIC EXTEND
can't be removed yet.
The main changes in the code are:
- intro patterns are implemented using a state machine (a goal comes
with a state). Ssrcommon.MakeState provides an easy way for a tactic
to enrich the goal with with data of interest, such as the set of
hyps to be cleared. This cleans up the old implementation that, in
order to thread the state, that to redefine a bunch of tclSTUFF
- the interpretation of (multiple) forward views uses the state to
accumulate intermediate results
- the bottom of Sscommon collects a bunch of utilities written in the
tactic monad. Most of them are the rewriting of already existing
utilities. When possible the old version was removed.
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We'd like to handle proofs functionally we thus recommend not to use
printing functions without an explicit context.
We also adapt most of the code, making more explicit where the
printing environment is coming from.
An open task is to refactor some code so we gradually make the
`Pfedit.get_current_context ()` disappear.
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ML level can set the flags themselves.
In particular, using injection and discriminate with option "Keep
Proofs Equalities" when called from "decide equality" and "Scheme
Equality".
This fixes bug #5281.
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Emilio Jesus Gallego Arias
Gaëtan Gilbert
Enrico Tassi
Maxime Dénès
Théo Zimmermann
Hugo Herbelin
Matej Košík