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Also prevents to use an entry name already defined.
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- New command "Declare Custom Entry bar".
- Entries can have levels.
- Printing is done using a notion of coercion between grammar
entries. This typically corresponds to rules of the form
'Notation "[ x ]" := x (x custom myconstr).' but also
'Notation "{ x }" := x (in custom myconstr, x constr).'.
- Rules declaring idents such as 'Notation "x" := x (in custom myconstr, x ident).'
are natively recognized.
- Rules declaring globals such as 'Notation "x" := x (in custom myconstr, x global).'
are natively recognized.
Incidentally merging ETConstr and ETConstrAsBinder.
Noticed in passing that parsing binder as custom was not done as in
constr.
Probably some fine-tuning still to do (priority of notations,
interactions between scopes and entries, ...). To be tested live
further.
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This is in preparation of changes in level_eq, to check that the
semantics is preserved.
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GitLab setup is quite stable these days thanks to the work of many
people and `coqbot`. We decided to keep CircleCI support for a while
as a safeguard in case something happened in the migration to GitLab,
but these days we are just wasting resources to them and to us. As I'm
afraid CircleCI won't scale for us, the time to remove it has arrived.
Still, CircleCI had some awesome functionality that GitLab's CI
doesn't offer yet, see the links at:
https://github.com/coq/coq/issues/6919#issuecomment-395885573
- https://gitlab.com/gitlab-org/gitlab-ce/issues/29347
- https://gitlab.com/gitlab-org/gitlab-ce/issues/35222
- https://gitlab.com/gitlab-org/gitlab-ce/issues/41947
- https://gitlab.com/gitlab-org/gitlab-ce/issues/47063
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Print the expected and actual types for the option value (which is one
of bool, int, or string).
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pattern (closes #7777)
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which has no matching clauses.
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This is particularly useful when the pattern is part of a disjunction.
Maybe this could be improved though, not mentioning the pattern when
there is no disjunction, but that would be more work.
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If a term is matched only against variables, it will not introduce a
"match" and thus, even if the term is of an inductive type, its
indices will not be taken into account in the current algorithm
(though one could imagine an algorithm which does an expansion
specially in order to filter on indices).
This allows to tell the unification not to use dependencies which the
pattern-matching algorithm is not able to exploit in practice.
See example in file 2733.v.
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There were actually two broken things with VM + evars, the fixes are:
- Do not pass let-bound arguments to evars.
- Use the right order for evar arguments.
Native compilation seems to be suffering from the same shortcomings, I will
open a separate bug and adapt the PR.
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No reason not to collapse inner applications with explicit arguments.
This is compatible with the ad hoc encoding of @f as GApp(f,[])/NApp(f,[]).
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underline, etc.)
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Remove forward reference to lexer.
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Proof General requires minor changes to make the diffs visible, but this code
shouldn't break the existing version of PG.
Diffs are computed for the hypotheses and conclusion of the first goal between
the old and new proofs. Strings are split into tokens using the Coq lexer,
then the list of tokens are diffed using the Myers algorithm. A fixup routine
(Pp_diff.shorten_diff_span) shortens the span of the diff result in some cases.
Diffs can be enabled with the Coq commmand "Set Diffs on|off|removed." or
"-diffs on|off|removed" on the OS command line. The "on" option shows only the
new item with added text, while "removed" shows each modified item twice--once
with the old value showing removed text and once with the new value showing
added text.
The highlights use 4 tags to specify the color and underline/strikeout.
These are "diffs.added", "diffs.removed", "diffs.added.bg" and "diffs.removed.bg".
The first two are for added or removed text; the last two are for
unmodified parts of a modified item.
Diffs that span multiple strings in the Pp are tagged with "start.diff.*" and
"end.diff.*", but only on the first and last strings of the span.
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(e.g. for debugging)
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case of missing record field
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As stated in the manual, the fourier tactic is subsumed by lra.
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While we were adding a new field into `QuestionMark`, we
decided to go ahead and refactor the constructor to hold
an actual record. This record now holds the name, obligations, and
whether the evar represents a missing record field.
This is used to provide better error messages on missing record
fields.
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For now we only copy the templates, but we could do more fancy stuff.
This helps to be compatible with build systems that take care of these
files automatically, see:
https://github.com/coq/coq/pull/6857#discussion_r202096579
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We use a more abstract representation for accumulators in the native
compilation scheme, that requires less fiddling with low-level implementation
details. It might be slower though.
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We make it possible to deprecate tactics defined by `Ltac`, `Tactic
Notation` or ML.
For the first two variants, we anticipate the syntax of attributes:
`#[deprecated(since = "XX", note = "YY")]`
In ML, the syntax is:
```
let reflexivity_depr =
let open CWarnings in
{ since = "8.5"; note = "Use admit instead." }
TACTIC EXTEND reflexivity DEPRECATED reflexivity_depr
[ "reflexivity" ] -> [ Tactics.intros_reflexivity ]
END
```
A warning is shown at the point where the tactic is used (either
a direct call or when defining another tactic):
Tactic `foo` is deprecated since XX. YY
YY is typically meant to be "Use bar instead.".
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This gives user control on the transparent state of a hint db. Can
override defaults more easily (report by J. H. Jourdan).
For "core", declare that variables can be unfolded, but no constants
(ensures compatibility with previous auto which allowed conv on closed
terms)
Document Hint Variables
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format).
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In some cases, Format's inner boxes inside an outer box act as break
hints, even though there are already "better" break hints in the outer
box.
We work around this "feature" by not inserting a box around the
default printing rule for a notation if there is no effective break
points in the box.
See https://caml.inria.fr/mantis/view.php?id=7804 for the related
OCaml discussion.
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We fix the issue by removing terms of the substitutions which have
free variables and are thus not interpretable in the context of the
"ltac:" subterm.
This remains rather ad hoc, since, in an expression "Notation f x :=
ltac:(foo)", we interpret "x" at calling time of "foo" rather than at
use time of "x" in foo, even if "x" is not necessary.
We could also imagine that binders in the ltac expressions are then
interpreted but that would start to be (very) complicated.
Note that this will presumably "fix" ltac2 quotations at the same
time.
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subtyping.
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