diff --git a/libguile/sort.c b/libguile/sort.c
index 2a36320ec..998be8986 100644
--- a/libguile/sort.c
+++ b/libguile/sort.c
@@ -1,5 +1,5 @@
 /* Copyright (C) 1999, 2000, 2001, 2002, 2004, 2006, 2007, 2008, 2009,
- *   2010, 2011, 2012 Free Software Foundation, Inc.
+ *   2010, 2011, 2012, 2014 Free Software Foundation, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
@@ -377,12 +377,13 @@ SCM_DEFINE (scm_sort_x, "sort!", 2, 0, 0,
       SCM_VALIDATE_LIST_COPYLEN (1, items, len);
       return scm_merge_list_step (&items, less, len);
     }
-  else if (scm_is_vector (items))
+  else if (scm_is_simple_vector (items)
+           || (scm_is_array (items) && scm_c_array_rank (items) == 1))
     {
       scm_restricted_vector_sort_x (items,
 				    less,
 				    scm_from_int (0),
-				    scm_vector_length (items));
+				    scm_array_length (items));
       return items;
     }
   else
@@ -403,7 +404,8 @@ SCM_DEFINE (scm_sort, "sort", 2, 0, 0,
 
   if (scm_is_pair (items))
     return scm_sort_x (scm_list_copy (items), less);
-  else if (scm_is_vector (items))
+  else if (scm_is_simple_vector (items)
+           || (scm_is_array (items) && scm_c_array_rank (items) == 1))
     return scm_sort_x (scm_vector_copy (items), less);
   else
     SCM_WRONG_TYPE_ARG (1, items);
@@ -489,7 +491,8 @@ SCM_DEFINE (scm_stable_sort_x, "stable-sort!", 2, 0, 0,
       SCM_VALIDATE_LIST_COPYLEN (1, items, len);
       return scm_merge_list_step (&items, less, len);
     }
-  else if (scm_is_vector (items))
+  else if (scm_is_simple_vector (items)
+           || (scm_is_array (items) && scm_c_array_rank (items) == 1))
     {
       scm_t_array_handle temp_handle, vec_handle;
       SCM temp, *temp_elts, *vec_elts;
@@ -532,7 +535,8 @@ SCM_DEFINE (scm_stable_sort, "stable-sort", 2, 0, 0,
 
   if (scm_is_pair (items))
     return scm_stable_sort_x (scm_list_copy (items), less);
-  else if (scm_is_vector (items))
+  else if (scm_is_simple_vector (items)
+           || (scm_is_array (items) && scm_c_array_rank (items) == 1))
     return scm_stable_sort_x (scm_vector_copy (items), less);
   else
     SCM_WRONG_TYPE_ARG (1, items);
diff --git a/libguile/vectors.c b/libguile/vectors.c
index eec10aa6d..abcbfa0d1 100644
--- a/libguile/vectors.c
+++ b/libguile/vectors.c
@@ -47,12 +47,26 @@
 int
 scm_is_vector (SCM obj)
 {
-  if (SCM_I_IS_VECTOR (obj))
+  if (SCM_I_IS_NONWEAK_VECTOR (obj))
     return 1;
-  if  (SCM_I_ARRAYP (obj) && SCM_I_ARRAY_NDIM (obj) == 1)
+  if (SCM_I_WVECTP (obj))
+    {
+      scm_c_issue_deprecation_warning
+        ("Expecting vector? to be true for weak vectors is deprecated.  "
+         "Use weak-vector? instead.");
+      return 1;
+    }
+  if (SCM_I_ARRAYP (obj) && SCM_I_ARRAY_NDIM (obj) == 1)
     {
       SCM v = SCM_I_ARRAY_V (obj);
-      return SCM_I_IS_VECTOR (v);
+      if (SCM_I_IS_VECTOR (v))
+        {
+          scm_c_issue_deprecation_warning
+            ("Expecting vector? to be true for rank-1 arrays is deprecated.  "
+             "Use array?, array-rank, and array-type instead.");
+          return 1;
+        }
+      return 0;
     }
   return 0;
 }
@@ -60,7 +74,16 @@ scm_is_vector (SCM obj)
 int
 scm_is_simple_vector (SCM obj)
 {
-  return SCM_I_IS_VECTOR (obj);
+  if (SCM_I_IS_NONWEAK_VECTOR (obj))
+    return 1;
+  if (SCM_I_WVECTP (obj))
+    {
+      scm_c_issue_deprecation_warning
+        ("Expecting scm_is_simple_vector to be true for weak vectors is "
+         "deprecated.  Use scm_is_weak_vector instead.");
+      return 1;
+    }
+  return 0;
 }
 
 const SCM *
@@ -127,6 +150,9 @@ scm_vector_length (SCM v)
   else if (SCM_I_ARRAYP (v) && SCM_I_ARRAY_NDIM (v) == 1)
     {
       scm_t_array_dim *dim = SCM_I_ARRAY_DIMS (v);
+      scm_c_issue_deprecation_warning
+        ("Using vector-length on arrays is deprecated.  "
+         "Use array-length instead.");
       return scm_from_size_t (dim->ubnd - dim->lbnd + 1);
     }
   else if (SCM_UNPACK (g_vector_length))
@@ -246,6 +272,10 @@ scm_c_vector_ref (SCM v, size_t k)
 	{
 	  register SCM elt;
 
+          scm_c_issue_deprecation_warning
+            ("Using vector-ref on arrays is deprecated.  "
+             "Use array-ref instead.");
+
 	  if (k >= dim->ubnd - dim->lbnd + 1)
 	    scm_out_of_range (NULL, scm_from_size_t (k));
 	  k = SCM_I_ARRAY_BASE (v) + k*dim->inc;
@@ -320,6 +350,10 @@ scm_c_vector_set_x (SCM v, size_t k, SCM obj)
       SCM vv = SCM_I_ARRAY_V (v);
       if (SCM_I_IS_VECTOR (vv))
 	{
+          scm_c_issue_deprecation_warning
+            ("Using vector-set! on arrays is deprecated.  "
+             "Use array-set! instead, but note the change in argument order.");
+
 	  if (k >= dim->ubnd - dim->lbnd + 1)
 	    scm_out_of_range (NULL, scm_from_size_t (k));
 	  k = SCM_I_ARRAY_BASE (v) + k*dim->inc;
@@ -341,13 +375,10 @@ scm_c_vector_set_x (SCM v, size_t k, SCM obj)
     {
       scm_c_issue_deprecation_warning
         ("Using vector-set! as a primitive-generic is deprecated.");
-      return scm_call_3 (g_vector_set_x, v, scm_from_size_t (k), obj);
+      scm_call_3 (g_vector_set_x, v, scm_from_size_t (k), obj);
     }
   else
-    {
-      scm_wrong_type_arg_msg ("vector-set!", 1, v, "vector");
-      return SCM_UNDEFINED;  /* not reached */
-    }
+    scm_wrong_type_arg_msg ("vector-set!", 1, v, "vector");
 }
 
 SCM_DEFINE (scm_make_vector, "make-vector", 1, 1, 0,