diff options
| -rw-r--r-- | CHANGES | 3 | ||||
| -rw-r--r-- | doc/sphinx/language/gallina-specification-language.rst | 3 | ||||
| -rw-r--r-- | doc/sphinx/proof-engine/proof-handling.rst | 13 |
3 files changed, 18 insertions, 1 deletions
@@ -18,6 +18,9 @@ Vernacular Commands - Removed deprecated commands Arguments Scope and Implicit Arguments (not the option). Use the Arguments command instead. +- Nested proofs may be enabled through the option `Nested Proofs Allowed`. + By default, they are disabled and produce an error. The deprecation + warning which used to occur when using nested proofs has been removed. Tactics diff --git a/doc/sphinx/language/gallina-specification-language.rst b/doc/sphinx/language/gallina-specification-language.rst index 4dcd7deb1..d17043105 100644 --- a/doc/sphinx/language/gallina-specification-language.rst +++ b/doc/sphinx/language/gallina-specification-language.rst @@ -1339,7 +1339,8 @@ using the keyword :cmd:`Qed`. .. note:: - #. Several statements can be simultaneously asserted. + #. Several statements can be simultaneously asserted provided option + :opt:`Nested Proofs Allowed` was turned on. #. Not only other assertions but any vernacular command can be given while in the process of proving a given assertion. In this case, the diff --git a/doc/sphinx/proof-engine/proof-handling.rst b/doc/sphinx/proof-engine/proof-handling.rst index 6d0b27728..eba0db3ff 100644 --- a/doc/sphinx/proof-engine/proof-handling.rst +++ b/doc/sphinx/proof-engine/proof-handling.rst @@ -113,6 +113,8 @@ list of assertion commands is given in :ref:`Assertions`. The command Aborts the editing of the proof named :token:`ident` (in case you have nested proofs). + .. seealso:: :opt:`Nested Proofs Allowed` + .. cmdv:: Abort All Aborts all current goals. @@ -561,6 +563,17 @@ Controlling the effect of proof editing commands has to be used to move the assumptions to the local context. +.. opt:: Nested Proofs Allowed + + When turned on (it is off by default), this option enables support for nested + proofs: a new assertion command can be inserted before the current proof is + finished, in which case Coq will temporarily switch to the proof of this + *nested lemma*. When the proof of the nested lemma is finished (with :cmd:`Qed` + or :cmd:`Defined`), its statement will be made available (as if it had been + proved before starting the previous proof) and Coq will switch back to the + proof of the previous assertion. + + Controlling memory usage ------------------------ |