Q_TACTactical.Q_TAC : (term -> tactic) -> term quotation -> tactic
A tactical that parses in the context of a goal, a la the Q library.
When applied to a term tactic T and a quotation
q, the tactic Q_TAC T q first parses the
quotation q in the context of the goal to yield the term
tm, and then applies the tactic T tm to the
goal.
The application of Q_TAC to a term tactic T
and a quotation q never fails. The resulting composite
tactic Q_TAC T q fails when applied to a goal if either
q cannot be parsed, or T tm fails when applied
to the goal.
Useful for avoiding decorating terms with type abbreviations.
Tactical.EVERY, Tactical.FIRST, Tactical.ORELSE, Tactical.THEN, Tactical.THEN1, Tactical.THENL