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This clean-up removes the dependency of the current proof mode (and hence
the parsing state) on unification.
The current proof mode can now be known simply by parsing and elaborating
attributes. We give access to attributes from the classifier for this purpose.
We remove the infamous `VtUnknown` code path in the STM which is known to
be buggy.
Fixes #3632 #3890 #4638.
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I don't think there's a reason to treat such variables more severely
than unbound variables. This anomaly is often raised by debug printers
(e.g. when studying complex scenarios using `Set Unification Debug`),
and so makes debugging less convenient.
Fixes #3754, fixes #10026.
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proofs.
We forbid commands that may open proofs inside proofs.
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(in case of side effects)
Also:
Fix #4781
Fix #4496
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removing the test.
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Since this is an open bug, it is of lesser importance but
non-deterministic tests are a real problem OTOH.
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Following up on #6791, we remove support refolding in reduction.
We also update a test case that was not properly understood, see the
discussion in #6895.
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Following up on #6791, we remove the option "Standard Proposition Elimination"
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by doing the same thing as `zify_nat` does for `nat.pred`.
This fixes #6602.
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Moving at the same to a passing "env sigma" style rather than passing
"gl". Not that it is strictly necessary, but since we had to move
functions taking only a "sigma" to functions taking also a "env", we
eventually adopted the "env sigma" style. (The "gl" style would have
been as good.)
This answers wish #4717.
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Was PR#192: Add test suite files for 4700-4785
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I didn't add any test-cases for timing-based bugs (4707, 4768, 4776,
4777, 4779, 4783), nor CoqIDE bugs (4700, 4751, 4752, 4756), nor
bugs about printing (4709, 4711, 4720, 4723, 4734, 4736, 4738, 4741,
4743, 4748, 4749, 4750, 4757, 4758, 4765, 4784). I'm not sure what to
do with 4712, 4714, 4732, 4740.
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Since edb55a94fc5c0473e57f5a61c0c723194c2ff414 landed, compat notations
no longer modify the parser in non-compat-mode, so we can do this
without breaking Ltac parsing. Also update the related test-suite
files.
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It seems warnings are not taken into account in output/
tests.
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With this commit, it is possible to write notations so that singleton
lists are usable in both 8.4 and 8.5pl1 -compat. Longer lists await the
ability to remove notations from the parser.
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This gets rid of brittle code written in ML files through Ltac quotations, and
reduces the dependance of Coq to such a feature. This also fixes the particular
instance of bug #2800, although the underlying issue is still there.
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evars were created making in turn that evars formerly recognized as
pending were not anymore in the list of pending evars). This also
fixes the reopening of #3848.
See comments on #4484 for details.
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This commit has deep consequences in term of tactic evaluation,
as it allows to pass any tac_arg to ML and alias tactics rather than
mere generic arguments. This makes the evaluation much more uniform,
and in particular it removes the special evaluation function for notations.
This last point may break some notations out there unluckily.
I had to treat in an ad-hoc way the tactic(...) entry of tactic notations
because it is actually not interpreted as a generic argument but rather
as a proper tactic expression instead.
There is for now no syntax to pass any tactic argument to a given ML or
notation tactic, but this should come soon.
Also fixes bug #3849 en passant.
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It breaks test-suite of trunk since Matthieu's fixes for the soundness of
polymorphic universes, and I am unsure of the expected semantics. We should
reintroduce it later on when we understand better the issue of simply fix it
once and for all.
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This option disallows "declare at first use" semantics for universe
variables (in @{}), forcing the declaration of _all_ universes appearing
in a definition when introducing it with syntax Definition/Inductive
foo@{i j k} .. The bound universes at the end of a definition/inductive
must be exactly those ones, no extras allowed currently.
Test-suite files using the old semantics just disable the option.
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