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#### Description of the problem
Using `unfold` tactic on an opaque term with `at` results in the following error message.
```
Anomaly
"Uncaught exception Environ.NotEvaluableConst(1)."
Please…
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`Proof using ...` annotations are useful but awkward for users. While it's not too hard to create tooling that will [add the necessary annotations automatically](https://github.com/coq/coq/pull/16177…
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A name, that is bound in a Ltac tactic, fails to be resolved when the tactic is used in a different module. A minimal non-working example follows. The expected behavior is the one of `generalize`, so …
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#### Version
Coq 8.7.0
#### Description of the problem
The documentation for `dtauto` only talks about handling user-defined n-ary conjunctions,
but the code in [`tauto.ml`](https://github.com…
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#### Description of the problem
In this context:
```
1 subgoal
x : {x : nat | P x}
H : proj1_sig x = 0
______________________________________(1/1)
proj1_sig x = 0
```
`rewrite H.` fails…
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#### Description of the problem
```coq
From Coq Require Import ssreflect ssrfun.
Lemma compA A B C D (f : A -> B) (g : B -> C) (h : C -> D):
h \o g \o f = h \o (g \o f).
Proof. by []. Q…
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I wanted to run the tutorial, but there were several roadblocks in my way.
1) The instructions talk about Mac OS-X and Windows, but not Linux. Not a big problem; I just copied the command line out…
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Version: 2.0.0-401c373d-x86_64-macos
stack backtrace:
0: backtrace::backtrace::trace
1: backtrace::capture::Backtrace::new
2: sp_panic_handler::set::{{closure}}
3: std::panicking::r…
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It seems like trackpad movement reports are 1-3 "frames" behind my actual inputs. For example, if I rapidly swipe my finger right across the trackpad, then *very* slowly move it left, I get a few more…
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Note: the issue was created automatically with bugzilla2github tool
Original bug ID: BZ#5333
From: @Armael
Reported version: trunk
CC: @Armael