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(the action is "clear").
Added subst_intropattern which was missing since the introduction of
ApplyOn intro patterns.
Still to do: make "intros _ ?id" working without interferences when
"id" is precisely the internal name used for hypotheses to discard.
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unification for apply (compatibility reason). Waiting for another way
to provide a more uniform scheme by default (keyed unification?).
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3566 gave a legitimate error, keyedrewrite was not setting keyed
unification on.
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their eta-expanded forms which can then unfold back to the unfolded
primitive projection form. This removes all special code that
was necessary to handle primitive projections before, while keeping
compatibility.
Also fix cbn which was not refolding primitive projections correctly
in all cases.
Update some test-suite files accordingly.
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(but deactivated still).
Set Keyed Unification to activate the option, which changes
subterm selection to _always_ use full conversion _after_ finding a
subterm whose head/key matches the key of the term we're looking for.
This applies to rewrite and higher-order unification in
apply/elim/destruct.
Most proof scripts already abide by these semantics. For those that
don't, it's usually only a matter of using:
Declare Equivalent Keys f g.
This make keyed unification consider f and g to match as keys.
This takes care of most cases of abbreviations: typically Def foo :=
bar and rewriting with a bar-headed lhs in a goal mentioning foo works
once they're set equivalent.
For canonical structures, these hints should be automatically declared.
For non-global-reference headed terms, the key is the constructor name
(Sort, Prod...). Evars and metas are no keys.
INCOMPATIBILITIES:
In FMapFullAVL, a Function definition doesn't go through with keyed
unification on.
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avoid looping and be compatible with unfold.
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for primitive projections, fixing bug #3661. Also fix expand_projection
so that it does enough reduction to find the inductive type of its
argument.
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so as to reproduce correctly the reduction behavior of existing
projections, i.e. delta + iota. Make [projection] an abstract datatype
in Names.ml, most of the patch is about using that abstraction.
Fix unification.ml which tried canonical projections too early in
presence of primitive projections.
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eta-expansion, creating a loop. This is now deactivated. Fixes bugs #3665 and #3667.
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Maintain the user-level view of primitive projections,
disallow manual unfolding and do not let hnf give the eta-expanded
form.
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for e_contextually where it is used. Bug #3648 is fixed.
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matching partial applications of primitive projections. Fixes bug #3637.
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Add a flag to indicate if we're in the toplevel or debuggger to not try
to retype terms in the wrong environment (and making find_rectype,
get_type_of untraceable). This fixes bug #3638 along with the previous
commit.
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equality of universes, along with a few other functions in evd.
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apply f, g,... so that apply f, g. succeeds when apply f; apply g
does. It just mimicks the behavior of rewrite foo bar.
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appear in the"
This reverts commit 9de1edd730eeb3cada742a27a36bc70178eda6d8.
Not the right way to do it. The evd shouldn't contain unrelated evars in the first place.
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clenv's value and type, ensuring we don't try to solve unrelated
goals (fixes bug#3633).
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examples.
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contortions in internalization/externalization. It uses a fully typed
version of detyping, requiring the environment, to move from
primitive projection applications to regular applications of
the eta-expanded version. The kernel is unchanged, and only
constrMatching needs compatibility code now.
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of resulution for goals whose head is "ref". + means the argument
is an input and shouldn't contain an evar, otherwise resolution
fails. This generalizes the Typeclasses Strict Resolution option
which prevents resolution to fire on underconstrained typeclass
constraints, now the criterion can be applied to specific parameters.
Also cleanup auto/eauto code, uncovering a potential backwards
compatibility issue: in cases the goal contains existentials, we
never use the discrimination net in auto/eauto. We should try to
set this on once the contribs are stabilized (the stdlib goes through
when the dnet is used in these cases).
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non-dependent or propositional constraint has already been found
(same behavior as before previous patch).
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Add a global option to check for multiple solutions and fail in that
case.
Add another flag to declare classes as having unique instances (not
checked but assumed correct, avoiding some backtracking).
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for tclEVARS which might solve existing goals.
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was working in 8.4.
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generated equation names).
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Hugo Herbelin
Pierre-Marie Pédrot
Matthieu Sozeau
Xavier Clerc
Pierre Boutillier
Enrico Tassi