diff --git a/src/eval.c b/src/eval.c
index 98b2a33..66b8606 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -687,6 +687,7 @@
 static void f_settabwinvar __ARGS((typval_T *argvars, typval_T *rettv));
 static void f_setwinvar __ARGS((typval_T *argvars, typval_T *rettv));
 static void f_shellescape __ARGS((typval_T *argvars, typval_T *rettv));
+static void f_shiftwidth __ARGS((typval_T *argvars, typval_T *rettv));
 static void f_simplify __ARGS((typval_T *argvars, typval_T *rettv));
 #ifdef FEAT_FLOAT
 static void f_sin __ARGS((typval_T *argvars, typval_T *rettv));
@@ -8051,6 +8052,7 @@
     {"settabwinvar",	4, 4, f_settabwinvar},
     {"setwinvar",	3, 3, f_setwinvar},
     {"shellescape",	1, 2, f_shellescape},
+    {"shiftwidth",	0, 0, f_shiftwidth},
     {"simplify",	1, 1, f_simplify},
 #ifdef FEAT_FLOAT
     {"sin",		1, 1, f_sin},
@@ -16652,6 +16654,17 @@
 }
 
 /*
+ * shiftwidth() function
+ */
+    static void
+f_shiftwidth(argvars, rettv)
+    typval_T	*argvars;
+    typval_T	*rettv;
+{
+    rettv->vval.v_number = get_sw_value();
+}
+
+/*
  * "simplify()" function
  */
     static void