diff options
Diffstat (limited to 'CHANGES')
| -rw-r--r-- | CHANGES | 105 |
1 files changed, 99 insertions, 6 deletions
@@ -1,10 +1,75 @@ -Changes from V8.5beta2 to ... +Changes beyond V8.5 +=================== + +Tactics + +- Flag "Bracketing Last Introduction Pattern" is now on by default. +- New flag "Shrink Abstract" that minimalizes proofs generated by the abstract + tactical w.r.t. variables appearing in the body of the proof. +- Serious bugs are fixed in tactic "double induction" (source of + incompatibilities as soon as the inductive types have dependencies in + the type of their constructors; "double induction" remains however + deprecated). +- In introduction patterns of the form (pat1,...,patn), n should match + the exact number of hypotheses introduced (except for local definitions + for which pattern can be omitted, as in regular pattern-matching). +- Tactic scopes in Ltac like constr: and ltac: now require parentheses around + their argument. +- Every generic argument type declares a tactic scope of the form "name:(...)" + where name is the name of the argument. This generalizes the constr: and ltac: + instances. + +Program + +- The "Shrink Obligations" flag now applies to all obligations, not only those + solved by the automatic tactic. + +Notations + +- "Bind Scope" can once again bind "Funclass" and "Sortclass". + +Changes from V8.5beta3 to V8.5 +============================== + +Tools + +- Flag "-compat 8.4" now loads Coq.Compat.Coq84. The standard way of + putting Coq in v8.4 compatibility mode is to pass the command line flag + "-compat 8.4". It can be followed by "-require Coq.Compat.AdmitAxiom" + if the 8.4 behavior of admit is needed, in which case it uses an axiom. + +Specification language + +- Syntax "$(tactic)$" changed to "ltac:(tactic)". + +Tactics + +- Syntax "destruct !hyp" changed to "destruct (hyp)", and similarly + for induction (rare source of incompatibilities easily solvable by + removing parentheses around "hyp" when not for the purpose of keeping + the hypothesis). +- Syntax "p/c" for on-the-fly application of a lemma c before + introducing along pattern p changed to p%c1..%cn. The feature and + syntax are in experimental stage. +- "Proof using" does not clear unused section variables. +- Tactic "refine" has been changed back to the 8.4 behavior of shelving subgoals + that occur in other subgoals. The "refine" tactic of 8.5beta3 has been + renamed "simple refine"; it does not shelve any subgoal. +- New tactical "unshelve tac" which grab existential variables put on + the tactic shelve by the execution of "tac". + +Changes from V8.5beta2 to V8.5beta3 =================================== Vernacular commands - New command "Redirect" to redirect the output of a command to a file. - New command "Undelimit Scope" to remove the delimiter of a scope. +- New option "Strict Universe Declaration", set by default. It enforces the + declaration of all polymorphic universes appearing in a definition when + introducing it. +- New command "Show id" to show goal named id. +- Option "Virtual Machine" removed. Tactics @@ -35,6 +100,12 @@ Program - The "Shrink Obligations" flag now applies to all obligations, not only those solved by the automatic tactic. +- Importing Program no longer overrides the "exists" tactic (potential source + of incompatibilities). +- Hints costs are now correctly taken into account (potential source of + incompatibilities). +- Documented the Hint Cut command that allows control of the + proof-search during typeclass resolution (see reference manual). API @@ -53,6 +124,25 @@ API Tools - Added an option -w to control the output of coqtop warnings. +- Configure now takes an optional -native-compiler (yes|no) flag replacing + -no-native-compiler. The new flag is set to no by default under Windows. +- Flag -no-native-compiler was removed and became the default for coqc. If + precompilation of files for native conversion test is desired, use + -native-compiler. +- The -compile command-line option now takes the full path of the considered + file, including the ".v" extension, and outputs a warning if such an extension + is lacking. +- The -require and -load-vernac-object command-line options now take a logical + path of a given library rather than a physical path, thus they behave like + Require [Import] path. +- The -vm command-line option has been removed. + +Standard Library + + - There is now a Coq.Compat.Coq84 library, which sets the various compatibility + options and does a few redefinitions to make Coq behave more like Coq v8.4. + The standard way of putting Coq in v8.4 compatibility mode is to pass the command + line flags "-require Coq.Compat.Coq84 -compat 8.4". Changes from V8.5beta1 to V8.5beta2 =================================== @@ -62,6 +152,10 @@ Logic - The VM now supports inductive types with up to 8388851 non-constant constructors and up to 8388607 constant ones. +Specification language + +- Syntax "$(tactic)$" changed to "ltac: tactic". + Tactics - A script using the admit tactic can no longer be concluded by either @@ -86,8 +180,6 @@ API - The interface of [change] has changed to take a [change_arg], which can be built from a [constr] using [make_change_arg]. -- [pattern_of_constr] now returns a triplet including the cleaned-up - [evar_map], removing the evars that were turned into metas. Changes from V8.4 to V8.5beta1 ============================== @@ -383,6 +475,9 @@ Program - "Solve Obligations using" changed to "Solve Obligations with", consistent with "Proof with". - Program Lemma, Definition now respect automatic introduction. +- Program Lemma, Definition, etc.. now interpret "->" like Lemma and + Definition as a non-dependent arrow (potential source of + incompatibility). - Add/document "Set Hide Obligations" (to hide obligations in the final term inside an implicit argument) and "Set Shrink Obligations" (to minimize dependencies of obligations defined by tactics). @@ -439,11 +534,9 @@ Interfaces documentation of OCaml's Str module for the supported syntax. - Many CoqIDE windows, including the query one, are now detachable to improve usability on multi screen work stations. - - Coqtop/coqc outputs highlighted syntax. Colors can be configured thanks to the COQ_COLORS environment variable, and their current state can be displayed with the -list-tags command line option. - - Third party user interfaces can install their main loop in $COQLIB/toploop and call coqtop with the -toploop flag to select it. @@ -2174,7 +2267,7 @@ Changes from V7.3.1 to V7.4 Symbolic notations - Introduction of a notion of scope gathering notations in a consistent set; - a notation sets has been developped for nat, Z and R (undocumented) + a notation sets has been developed for nat, Z and R (undocumented) - New command "Notation" for declaring notations simultaneously for parsing and printing (see chap 10 of the reference manual) - Declarations with only implicit arguments now handled (e.g. the |