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I've messed up with parts of the compatibility files I had to commit.
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A file was introduced by mistake in theories/Logic.
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if_then_else definition does not account for multi success tactics.
tryif_then_else is a primitive tactical with the expected behavior.
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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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Importing VectorNotations breaks `; []`. So we make sure it's not
imported by defualt. Some files might be required to `Import
VectorDef.VectorNotations` rather than just `Import VectorNotations`.
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Also delimit vector_scope with vector, so that people can write %vector
without having to delimit it themselves.
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extensionality in H supposed to be a quantified equality until
giving a bare equality.
Thanks to Jason Gross and Jonathan Leivent for suggestions and
examples.
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~True.
Found 1 incompatibility in tested contribs and 3 times the same
pattern of incompatibility in the standard library. In all cases, it
is an improvement in the form of the script.
New behavior deactivated when version is <= 8.5.
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Add a boolean for refolding during reduction, and an option
that is off by default in 8.6, to turn refolding on in all reduction
functions, as in 8.5.
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We add a flag Keep Admitted Variables that allows to recover the legacy
v8.4 behaviour of admitted lemmas. The statement of such lemmas did not
depend on the current context variables.
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Was triggering a deprecation warning.
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It was anyway unusable due to a parsing conflict with the swap operator on
goals. Was triggering a warning when compiling the prelude.
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Was PR#199: Unbreak singleton list-like notation (-compat 8.4)
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We also add a Coq86.v compat file.
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This way, it's not eaten by a section
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This definition was removed by a4043608f704f026de7eb5167a109ca48e00c221 (This commit adds full universe polymorphism and fast projections to Coq), for reasons I do not know. This means that things like `unfold option_map` work only in 8.5, while `unfold <application of Facts>.option_map` works only in 8.4. This allows `unfold` to work correctly in both 8.4 and 8.5.
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We don't actually need to, unless we want to support the (presumably
uncommon) use-case of someone using [Import VectorNotations] to override
their local notation for things in vector_scope.
Additionally, we now maintain the behavior that [Import VectorNotations]
opens vector_scope.
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Otherwise we may backtrack on the resolution in a
by which seems strange.
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For compatibility with 8.5.
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There were three versions of injection:
1. "injection term" without "as" clause:
was leaving hypotheses on the goal in reverse order
2. "injection term as ipat", first version:
was introduction hypotheses using ipat in reverse order without
checking that the number of ipat was the size of the injection
(activated with "Unset Injection L2R Pattern Order")
3. "injection term as ipat", second version:
was introduction hypotheses using ipat in left-to-right order
checking that the number of ipat was the size of the injection
and clearing the injecting term by default if an hypothesis
(activated with "Set Injection L2R Pattern Order", default one from 8.5)
There is now:
4. "injection term" without "as" clause, new version:
introducing the components of the injection in the context in
left-to-right order using default intro-patterns "?"
and clearing the injecting term by default if an hypothesis
(activated with "Set Structural Injection")
The new versions 3. and 4. are the "expected" ones in the sense that
they have the following good properties:
- introduction in the context is in the natural left-to-right order
- "injection" behaves the same with and without "as", always
introducing the hypotheses in the goal what corresponds to the
natural expectation as the changes I made in the proof scripts for
adaptation confirm
- clear the "injection" hypothesis when an hypothesis which is the
natural expectation as the changes I made in the proof scripts for
adaptation confirm
The compatibility can be preserved by "Unset Structural Injection" or
by calling "simple injection".
The flag is currently off.
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They were already commented out, Pierre confirms they're spurious.
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Add a substitution of a local variable by its body to
ensure proper unification without having to make all local
variables unfoldable.
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