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Diffstat (limited to 'CHANGES')
| -rw-r--r-- | CHANGES | 56 |
1 files changed, 54 insertions, 2 deletions
@@ -1,5 +1,54 @@ -Changes from V8.3 to V8.4 -========================= +Changes from V8.4beta to V8.4 +============================= + +Vernacular commands + +- Undo and UndoTo are now handling the proof states. They may + perform some extra steps of backtrack to avoid states where + the proof state is unavailable (typically a closed proof). +- The commands Suspend and Resume have been removed. +- A basic Show Script has been reintroduced (no indentation). +- New command "Set Parsing Explicit" for deactivating parsing (and printing) + of implicit arguments (useful for teaching). +- New command "Grab Existential Variables" to transform the unresolved evars at + the end of a proof into goals. + +Tactics + +- Still no general "info" tactical, but new specific tactics + info_auto, info_eauto, info_trivial which provides information + on the proofs found by auto/eauto/trivial. Display of these + details could also be activated by Set Info Auto/Eauto/Trivial. +- Details on everything tried by auto/eauto/trivial during + a proof search could be obtained by "debug auto", "debug eauto", + "debug trivial" or by a global "Set Debug Auto/Eauto/Trivial". +- New command "r string" that interprets "idtac string" as a breakpoint + and jumps to its next use in Ltac debugger. +- Tactics from the Dp plugin (simplify, ergo, yices, cvc3, z3, cvcl, + harvey, zenon, gwhy) have been removed, since Why2 has not been + maintained for the last few years. The Why3 plugin should be a suitable + replacement in most cases. + +Libraries + +- MSetRBT : a new implementation of MSets via Red-Black trees (initial + contribution by Andrew Appel). +- MSetAVL : for maximal sharing with the new MSetRBT, the argument order + of Node has changed (this should be transparent to regular MSets users). + +Module System + +- The names of modules (and module types) are now in a fully separated + namespace from ordinary definitions : "Definition E:=0. Module E. End E." + is now accepted. + +CoqIDE + +- Coqide now supports the Restart command, and Undo (with a warning). + Better support for Abort. + +Changes from V8.3 to V8.4beta +============================= Logic @@ -69,6 +118,8 @@ Tactics - When applying destruct or inversion on a fixpoint hiding an inductive type, recursive calls to the fixpoint now remain folded by default (rare source of incompatibility generally solvable by adding a call to simpl). +- The behavior of the simpl tactic can be tuned using the new "Arguments" + vernacular. Vernacular commands @@ -90,6 +141,7 @@ Vernacular commands to avoid conversion at Qed time to go into a very long computation. - New command "Show Goal ident" to display the statement of a goal, even a closed one (available from Proof General). +- New command "Arguments" subsuming "Implicit Arguments" and "Arguments Scope". Module System |