NO_THEN : thm_tactical

SYNOPSIS
Theorem-tactical which always fails.

DESCRIPTION
When applied to a theorem-tactic and a theorem, the theorem-tactical NO_THEN always fails with Failwith "NO_THEN".

FAILURE CONDITIONS
Always fails when applied to a theorem-tactic and a theorem (note that it never gets as far as being applied to a goal!)

USES
Writing compound tactics or tacticals.

SEE ALSO
ALL_TAC, ALL_THEN, FAIL_TAC, NO_TAC.