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* Updating headers.Gravatar herbelin2012-08-08
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15715 85f007b7-540e-0410-9357-904b9bb8a0f7
* Improving management of notations with binders (see #2708 where aGravatar herbelin2012-07-21
| | | | | | | variable is used both as term and as binder, resulting in ununderstandable error message about scopes). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15642 85f007b7-540e-0410-9357-904b9bb8a0f7
* Restore test file induct.v where the "in |- *" is mandatoryGravatar letouzey2012-07-10
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15585 85f007b7-540e-0410-9357-904b9bb8a0f7
* Legacy Ring and Legacy Field migrated to contribsGravatar letouzey2012-07-05
| | | | | | | | | One slight point to check someday : fourier used to launch a tactic called Ring.polynom in some cases. It it crucial ? If so, how to replace with the setoid_ring equivalent ? git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15524 85f007b7-540e-0410-9357-904b9bb8a0f7
* Kills the useless tactic annotations "in |- *"Gravatar letouzey2012-07-05
| | | | | | | Most of these heavyweight annotations were introduced a long time ago by the automatic 7.x -> 8.0 translator git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15518 85f007b7-540e-0410-9357-904b9bb8a0f7
* Open Local Scope ---> Local Open Scope, same with Notation and aliiGravatar letouzey2012-07-05
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15517 85f007b7-540e-0410-9357-904b9bb8a0f7
* ZArith + other : favor the use of modern names instead of compat notationsGravatar letouzey2012-07-05
| | | | | | | | | | | | | | | | | | - For instance, refl_equal --> eq_refl - Npos, Zpos, Zneg now admit more uniform qualified aliases N.pos, Z.pos, Z.neg. - A new module BinInt.Pos2Z with results about injections from positive to Z - A result about Z.pow pushed in the generic layer - Zmult_le_compat_{r,l} --> Z.mul_le_mono_nonneg_{r,l} - Using tactic Z.le_elim instead of Zle_lt_or_eq - Some cleanup in ring, field, micromega (use of "Equivalence", "Proper" ...) - Some adaptions in QArith (for instance changed Qpower.Qpower_decomp) - In ZMake and ZMake, functor parameters are now named NN and ZZ instead of N and Z for avoiding confusions git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15515 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing bug #2809 (anomaly when printing a module with notations due toGravatar herbelin2012-06-20
| | | | | | | bad interaction between lazy evaluation of pp streams and temporary effectful extension of global environment). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15457 85f007b7-540e-0410-9357-904b9bb8a0f7
* Proof using: nested sections bugfixGravatar gareuselesinge2012-06-18
| | | | | | | | | | | | | | It used to be the case that the list of declared section variables for a constant was taken into account only when discharging the first enclosing sections, but not any outer section. Example of the bug: Section A. Variable x : bool. Section B. Variable y : nat. Lemma foo : True. Proof using x y. Admitted. End B. End A. Check foo. (* nat -> True instead of bool -> nat -> True *) git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15445 85f007b7-540e-0410-9357-904b9bb8a0f7
* Changed encoding from ISO-8859-1 to UTF-8 for some remaining gallina files.Gravatar ppedrot2012-06-12
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15431 85f007b7-540e-0410-9357-904b9bb8a0f7
* Repair two testsGravatar letouzey2012-04-12
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15131 85f007b7-540e-0410-9357-904b9bb8a0f7
* Relax uniform inheritance conditionGravatar gareuselesinge2012-04-05
| | | | | | | Uniform inheritance is not always needed for the coercion mechanism to work. We turn it into a warning. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15117 85f007b7-540e-0410-9357-904b9bb8a0f7
* Unification: Added a heuristic to solve problems of the formGravatar herbelin2012-03-26
| | | | | | | | | | | | | | | | | | ?x[t1..tm] = ?y[u1..un] when ?x occurs in u1..un with no (easy) way to know if it occurs in rigid position or not. Such equations typically come from matching problems such as "match a return ?T[a] with pair a1 a2 => a1 end" where, a is in type "?A * ?B", and, in the branch, the return clause, of the form "?T[pair ?A ?B a1 a2]", has to be unified with ?A. This possible dependency is kept since commits r15060-15062. The heuristic is to restrict ?T so that the dependency is removed, leading to a behavior similar to the one existing before these commits. This allows BGsection15.v, from contrib Ssreflect, to compile as it did before these commits. Also, removed one function exported without true need in r15061. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15092 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fix the test-suite by removing any Reset in the scriptsGravatar letouzey2012-03-23
| | | | | | | | Reset and the other backtracking commands (Back, BackTo, Backtrack) are now allowed only during interactive session, not in compiled or loaded scripts. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15087 85f007b7-540e-0410-9357-904b9bb8a0f7
* evarconv: MaybeFlex/MaybeFlex case infers more Canonical StructuresGravatar gareuselesinge2012-03-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Canonical Structure inference works on named terms only: i.e. the projection and the value must be named (with few exceptions). The set of named (head) terms is: (Var _|Construct _|Ind _|Const _|Prod _|Sort _) The set of unnamed is thus: (Case _|Fix _|CoFix _|Evar _|Meta _|Rel _) The MaybeFlex/MaybeFlex case, when no CS inference takes place, unfolds the rhs only if it exposes a named term. If it exposes an unnamed term, it tries to unfold on the lhs first. Note that unnamed terms are whd normal terms, since iota and zeta are performed by evar_apprec. So the algorithm behaves as before, but stops unfolding the rhs 1 delta step before it exposes an unnamed term. Then it starts unfolding the lhs. If the lhs exposes a rigid term the rhs is naturally unfolded, going back to same situation in which the algorithm was ending before. But while it unfolds on the left, the rhs is still named, and canonical structure inference can succeed. Ex failing before, the "canon_" prefix marks projections/values declared as canonical. Record test := K { canon_proj : nat } (* canon_proj x := math x with K y => y end *) canon_val x := match x with 0 => 0 | S m => m end Canonical Structure canon_struct x := K (canon_val x) (* aliases *) proj := canon_proj val := canon_val Old alg: proj ? ===?=== val x proj ? ===?=== canon_val x proj ? ===?=== match x with ... end canon_proj ? ===?=== match x with ... end (* no inference *) match ? with K x...end ===?=== match x with 0 ...end (* FAIL *) New alg: proj ? ===?=== val x proj ? ===?=== canon_val x canon_proj ? ===?=== canon_val x (* inference works: ? := canon_struct *) In case canon_struct is not declared for canon_proj and canon_val it continues like that: canon_proj ? ===?=== canon_val x match ? with K x...end ===?=== canon_val x match ? with K x...end ===?=== match x with 0 ...end (* FAIL *) git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15077 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing bug #2724 (using notations with binders in cases patternsGravatar herbelin2012-03-20
| | | | | | was provoking an anomaly instead of a regular error). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15070 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing alpha-conversion bug #2723 introduced in r12485-12486.Gravatar herbelin2012-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The optimisation done of Namegen.visibly_occur_id did not preserve the previous behavior when pr_constr/constr_extern/detype were called on a term with free rel variables. We backtrack on it to go back to the 8.2 behavior. Seized this opportunity to clarify the meaning of the at_top flag in constrextern.ml and printer.ml and to rename it into goal_concl_style. The badly-named at_top flag was introduced in Coq 6.3 in 1999 to mean that when printing variables bound in the goal, names had to avoid the names of the variables of the goal context, so as to keep naming stable when using "intro"; in r4458, printing improved by not avoiding names that were short names of global definitions, e.g. "S", or "O" (except when the at_top flag was on for compatibility reasons). Other printing strategies could be possible in the non-goal-concl-style mode. For instance, all bound variables could be made distinct in a given expression, even if no clash occur, therefore following so-called Barendregt's convention. This could be done by setting "avoid" to "ids_of_rel_context (rel_context env)" in extern_constr and extern_type (and then, Namegen.visibly_occur_id could be re-simplified again!). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15067 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fix bugs related to Program integration.Gravatar msozeau2012-03-19
| | | | | | | | | | | - reinstall (x : T | P) binder syntax extension. - fix a wrong Evd.define in coercion code. - Simplify interface of eterm_obligations to take a single evar_map. - Fix a slightly subtle bug related to resolvability of evars: some were marked unresolvable and never set back to resolvable across calls to typeclass resolution. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15057 85f007b7-540e-0410-9357-904b9bb8a0f7
* "Let in" in pattern hell, one more iterationGravatar pboutill2012-03-02
| | | | | | | | This reverts commit 28bcf05dd876beea8697f6ee47ebf916a8b94cdf. An other wrong externalize function git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15021 85f007b7-540e-0410-9357-904b9bb8a0f7
* Use a heuristic to not simplify equality hypotheses remaining after ↵Gravatar msozeau2012-02-20
| | | | | | | | dependent induction if they don't look really trivial. We still are making a choice though. Fixes bug #2712. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14988 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fix simplification of ind. hyps., recognized by a [block] in their type (bug ↵Gravatar msozeau2012-01-28
| | | | | | #2674) and properly clear [block] at end of simplification (bug #2691). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14948 85f007b7-540e-0410-9357-904b9bb8a0f7
* Backtracking on r14876 (fix for bug #2267): extra scopes might beGravatar herbelin2012-01-05
| | | | | | | useful in the presence of coercions to Funclass. Fixed the bug differently. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14880 85f007b7-540e-0410-9357-904b9bb8a0f7
* Type inference unification: fixed a 8.4 bug in the presence of unificationGravatar herbelin2012-01-04
| | | | | | with evars under binders. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14873 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing bug #2634 (unscoped notations were disturbing theGravatar herbelin2011-12-18
| | | | | | interpretation order of scoped notations). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14819 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixed a Not_found bug when declaring in a section some implicitGravatar herbelin2011-12-18
| | | | | | | | | arguments for a constant not defined in the section. Also fixed some typos in the doc of implicit arguments in the reference manual. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14816 85f007b7-540e-0410-9357-904b9bb8a0f7
* Added ability to take the type of applied metas into account whenGravatar herbelin2011-12-17
| | | | | | | | | | instantiating them in the unification algorithm used for tactics. This allows to discard ill-typed uses of first-order unification which otherwise would have been fatal (this incidentally allows to partially restore some compatibility with 8.3 that was broken after eta was added in unification). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14812 85f007b7-540e-0410-9357-904b9bb8a0f7
* Proof using ...Gravatar gareuselesinge2011-12-12
| | | | | | | | | | | | | New vernacular "Proof using idlist" to declare the variables to be discharged at the end of the current proof. The system checks that the set of declared variables is a superset of the set of actually used variables. It can be combined in a single line with "Proof with": Proof with .. using .. Proof using .. with .. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14789 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing grammar resetting bug in the presence of levels initially emptyGravatar herbelin2011-12-07
| | | | | | (the number of entries to reset was not correct). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14778 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing a bug of commit r13310 (activating coercions only when moduleGravatar herbelin2011-12-07
| | | | | | | is imported): in case of nested modules, activation was done as soon as the outermost module was imported. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14775 85f007b7-540e-0410-9357-904b9bb8a0f7
* Discarding let-ins from the instances of the evars in theGravatar herbelin2011-12-04
| | | | | | | | | | pattern-unification test. They were tolerated up to r14539. Also expanded the let-ins not bound to rel or var in the right-hand side of a term for which pattern-unification is tested (this expansion can refer to a non-let variable that has to be taken into account in the pattern-unification test). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14757 85f007b7-540e-0410-9357-904b9bb8a0f7
* Quick hack to avoid anomaly on using Program w/o having required JMeq.Gravatar herbelin2011-11-30
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14749 85f007b7-540e-0410-9357-904b9bb8a0f7
* Extraction: Richer patterns in matchs as proposed by P.N. TollitteGravatar letouzey2011-11-28
| | | | | | | | | | | | | | | | | The MLcase has notably changed: - No more case_info in it, but only a type annotation - No more "one branch for one constructor", but rather a sequence of patterns. Earlier "full" pattern correspond to pattern Pusual. Patterns Pwild and Prel allow to encode optimized matchs without hacks as earlier. Other pattern situations aren't used (yet) by extraction, but only by P.N Tollitte's code. A MLtuple constructor has been introduced. It isn't used by the extraction for the moment, but only but P.N. Tollitte's code. Many pretty-print functions in ocaml.ml and other have been reorganized git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14734 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixed a bug in postprocessing dependencies in pattern-matching compilationGravatar herbelin2011-11-26
| | | | | | | (bug was introduced in r14703 when postprocessing started to traverse inner cases). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14732 85f007b7-540e-0410-9357-904b9bb8a0f7
* Configurable simpl tacticGravatar gareuselesinge2011-11-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The problem that this patch tries to solve is that sometimes the unfolding behaviour of simpl is too aggressive, frequently exposing match constructs. Moreover one may want some constants to never be unfolded by simpl (like in the Math-Comp library where the nosimpl hack is pervasive). Finally, one may want some constants to be volatile, always unfolded by simple when applied to enough arguments, even if they do not hide a fixpoint or a match. A new vernacular command to be indroduced in a following patch attaches to constants an extra-logical piece of information. It declares wich arguments must be checked to evaluate to a constructor before performing the unfolding of the constant (in the same spirit simpl considers as such the recursive argument of an inner fixpoint). Examples: Arguments minus !x !y. (* x and y must evaluate to a constructor for simpl to unfold minus *) (S x - y) --- simpl ---> (S x - y) (S x - S y) --- simpl ---> (x - y) Definition fcomp A B C (f : B -> C) (g : A -> B) x := f (g x). Arguments fcomp A B C f g x /. Infix "\o" := fcomp (at level 50, left associativity) : nat_scope. (* fcomp hides no fix, but simpl will unfold if applied to 6 arguments *) (fun x => (f \o g) x) = f \o g --- simpl ---> (fun x => f (g x)) = f \o g Arguments minus x y : simpl never. (* simpl will never unfold minus *) (S x - S y) --- simpl ---> (S x - S y) Definition nid (x : nat) := x. Arguments nid / x. (* nid is volatile, unfolded by simpl when applied to 0 or more arguments *) nid --- simpl ---> (fun x => x) Arguments minus x y : simpl nomatch. (* triggers for minus the "new" simpl heuristic I discussed with Hugo: if reducing the fix would leave a match in "head" position then don't unfold a suggestion for a better name (for "nomatch") would be appreciated *) (0 - y) --- simpl ---> 0 (S x - y) --- simpl ---> (S x - y) (S x - S y) --- simpl ---> (x - y) (minus 0) --- simpl ---> (minus 0) (* This last test does not work as one may expect, i.e. (minus 0) --- simpl ---> (fun _ => 0) The point is that simpl is implemented as "strong whd_simpl" and after unfolding minus you have (fun m => match 0 => 0 | S n' => ...n' - m'... end) that is already in whd and exposes a match, that of course "strong" would reduce away but at that stage we don't know, and reducing by hand under the lambda is against whd reduction. So further discussion on that idea is needed. *) git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14716 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing postprocessing bugs in pattern-matching compilation.Gravatar herbelin2011-11-21
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14703 85f007b7-540e-0410-9357-904b9bb8a0f7
* Changed the way to detect if an "as" patterns is expanded or not. TheGravatar herbelin2011-11-21
| | | | | | | | | | | | | | | | | | main criterion is to look at whether the alias to the term to match is dependent in the return predicate or not. Since the exact return predicate is often found late, the detection is done after the subproblem is fully compiled, when a maximum amount of (local) information on typing is known. Eventually, we should go to a model where all possible partial expansions of an alias are usable at typing time. Indeed the current heuristic (like the previous one) is not fully safe since it might decide not to expand an alias in a branch whose type does not depend of the alias but the typing of the branch internally needs the expansion (as e.g. in "fun (H:forall n, n=0->Prop) n => match n with 0 as x => H x eq_refl | _ => True end"). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14701 85f007b7-540e-0410-9357-904b9bb8a0f7
* Updating Cases.v test.Gravatar herbelin2011-11-21
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14700 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing new bug introduced in r14665 when fixing bug #1834.Gravatar herbelin2011-11-17
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14674 85f007b7-540e-0410-9357-904b9bb8a0f7
* Improved check is_open_canonical_projectionGravatar gareuselesinge2011-11-08
| | | | | | | | | | | | | | The check looks for 1 canonical projection applied to a meta/evar. This fails to deal with telescopes that generate unification problems containing something like "(pi_1 (pi_2 ?))" that is indeed a "stuck" canonical projection but not of the form recognized by the previous implementation. The same holds when pi_2 is a general function not producing a constructor. This patch checks if the argument of the canonical projection weak head reduces to a constructor calling whd_betadeltaiota. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14645 85f007b7-540e-0410-9357-904b9bb8a0f7
* Allow "|_=>_" in "match" in patterns, no more forced enumeration of constructorsGravatar letouzey2011-11-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For instance, consider this inductive type: Inductive Ind := A | B | C | D. For detecting "match" on this type, one was forced earlier to write code in Ltac using "match goal" and/or "context [...]" and long patterns such as: match _ with A => _ | B => _ | C => _ | D => _ end After this patch, this pattern can be shortened in many alternative ways: match _ with A => _ | _ => _ end match _ with B => _ | _ => _ end match _ in Ind with _ => _ end Indeed, if we want to detect a "match" of a given type, we can either leave at least one branch where a constructor is explicit, or use a "in" annotation. Now, we can also detect any "match" regardless of its type: match _ with _ => _ end Note : this will even detect "match" over empty inductive types. Compatibility should be preserved, since "match _ with end" will continue to correspond only to empty inductive types. Internally, the constr_pattern PCase has changed quite a lot, a few elements are now grouped into a case_info_pattern record, while branches are now lists of given sub-patterns. NB: writing "match" with missing last branches in a constr pattern was actually tolerated by Pattern.pattern_of_glob_constr earlier, since the number of constructor per inductive is unknown there. And this was triggering an uncaught exception in a array_fold_left_2 in Matching later. Oups. At least this patch fixes this issue... Btw: the code in Pattern.pattern_of_glob_constr was quadratic in the number of branch in a match pattern. I doubt this was really a problem, but having now linear code instead cannot harm ;-) git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14644 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing incorrect change to pattern-unification over Meta's introducedGravatar herbelin2011-11-06
| | | | | | | | | | | | | | | in r14199 (June 2011). Meta's implicitly depend on the context they are defined in and this has to be taken into account for checking if occurrences are distinct (in particular, no Var's are allowed as arguments of a pattern-unifiable Meta). The example expected to be accepted thanks to r14199 is not a pattern-unification problem (it has more than one solution) and was anyway already accepted (strange). Compared to before r14199, aliases expansion and restriction of pattern unification check to variables occurring in the right-hand side are however now taken into account. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14642 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing tactic remember not correctly checking preservation of typingGravatar herbelin2011-11-06
| | | | | | in hypotheses. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14638 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing "destruct" test.Gravatar herbelin2011-10-25
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14594 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing another bug revealing ill-typed use of evar restriction.Gravatar herbelin2011-10-24
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14585 85f007b7-540e-0410-9357-904b9bb8a0f7
* Use full conversion for checking type of holes in destruct over aGravatar herbelin2011-10-22
| | | | | | | pattern; this fixes stupid causes of failure of destruct shown by compiling contrib Containers. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14579 85f007b7-540e-0410-9357-904b9bb8a0f7
* Completing r14538 (Chung-Kil Hur's trick for fast dependently-typedGravatar herbelin2011-10-11
| | | | | | | | | | | second-order matching) which was not working correctly in the general case. Also made that second-order matching for tactics (abstract_list_all) uses this algorithm, along the lines of a proposal first experimented by Dan Grayson (see unification.v). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14549 85f007b7-540e-0410-9357-904b9bb8a0f7
* It happens that the type inference algorithm (pretyping) did not checkGravatar herbelin2011-10-05
| | | | | | | | | | that the return predicate of the match construction is at an allowed sort, resulting in tactics possibly manipulating ill-typed terms. This is now fixed, Incidentally removed in pretyping an ill-placed coercion. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14508 85f007b7-540e-0410-9357-904b9bb8a0f7
* Added support for referring to subterms of the goal by pattern.Gravatar herbelin2011-09-26
| | | | | | Tactics set/remember and destruct/induction take benefit of it. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14499 85f007b7-540e-0410-9357-904b9bb8a0f7
* moins de reification inutile, noatations standardsGravatar pottier2011-08-04
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14385 85f007b7-540e-0410-9357-904b9bb8a0f7
* Relaxed the constraint introduced in r14190 that froze the existingGravatar herbelin2011-06-18
| | | | | | | | | | | evars when rewriting. Use it for autorewrite and subst. Accept evars instantiation in multi_rewrite so that rewrite alone remains compatible (it is used in contribs, e.g. Godel, in places where it does not seem absurd to allow it), but there are no good reason for it. Comments welcome. + addition of some tests for rewriting (one being related to commit 14217) git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14222 85f007b7-540e-0410-9357-904b9bb8a0f7