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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/sphinx/proof-engine/ltac.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/sphinx/proof-engine/ltac.rst b/doc/sphinx/proof-engine/ltac.rst index 52e3029b8f..0322b43694 100644 --- a/doc/sphinx/proof-engine/ltac.rst +++ b/doc/sphinx/proof-engine/ltac.rst @@ -1071,6 +1071,16 @@ Proving a subgoal as a separate lemma It may be useful to generate lemmas minimal w.r.t. the assumptions they depend on. This can be obtained thanks to the option below. + .. warning:: + + The abstract tactic, while very useful, still has some known + limitations, see https://github.com/coq/coq/issues/9146 for more + details. Thus we recommend using it caution in some + "non-standard" contexts. In particular, ``abstract`` won't + properly work when used inside quotations ``ltac:(...)``, or + if used as part of typeclass resolution, it may produce wrong + terms when in universe polymorphic mode. + .. tacv:: abstract @expr using @ident Give explicitly the name of the auxiliary lemma. |