fix(library/tactic/rewrite_tactic): fixes #702

src/library/tactic/rewrite_tactic.cpp

@@ -743,7 +743,7 @@ class rewrite_fn {
         if (!oe)
             return none_expr();
         expr new_e     = *oe;
-        optional<expr> unfolded_e = unfold_app(m_env, new_e);
+        optional<expr> unfolded_e = unfold_term(m_env, new_e);
         if (!unfolded_e)
             return none_expr();
         bool use_cache   = occ.is_all();

tests/lean/run/702.lean

@@ -0,0 +1,6 @@
+definition bar := bool
+example (b : bar) : bool :=
+begin
+  rewrite [↓bar],
+  assumption
+end