diff --git a/icu4c/source/common/unicode/uniset.h b/icu4c/source/common/unicode/uniset.h
index cfc86f9e13f..52583b89673 100644
--- a/icu4c/source/common/unicode/uniset.h
+++ b/icu4c/source/common/unicode/uniset.h
@@ -14,6 +14,7 @@
 #include "unicode/utypes.h"
 #include "unicode/unistr.h"
 #include "unicode/uchar.h"
+#include "unicode/uset.h"
 
 U_NAMESPACE_BEGIN
 
@@ -26,33 +27,6 @@ class TransliteratorParser;
 class UVector;
 class CaseEquivClass;
 
-/**
- * Bitmask values to be passed to the UnicodeSet constructor or
- * applyPattern() taking an option parameter.
- * @internal
- */
-enum {
-    /**
-     * Ignore white space within patterns unless quoted or escaped.
-     * @internal
-     */
-    USET_IGNORE_SPACE = 1,  
-
-    /**
-     * Enable case insensitive matching.  E.g., "[ab]" with this flag
-     * will match 'a', 'A', 'b', and 'B'.  "[^ab]" with this flag will
-     * match all except 'a', 'A', 'b', and 'B'.
-     * @internal
-     */
-    USET_CASE_INSENSITIVE = 2,  
-
-    /**
-     * Bitmask for UnicodeSet::closeOver() indicating letter case.
-     * This may be ORed together with other selectors.
-     * @internal
-     */
-    USET_CASE = 2
-};
     
 /**
  * A mutable set of Unicode characters and multicharacter strings.  Objects of this class
diff --git a/icu4c/source/common/unicode/uset.h b/icu4c/source/common/unicode/uset.h
index 0084959eed2..2cbbabe37ca 100644
--- a/icu4c/source/common/unicode/uset.h
+++ b/icu4c/source/common/unicode/uset.h
@@ -29,6 +29,7 @@
 
 #include "unicode/utypes.h"
 
+#ifndef UCNV_H
 struct USet;
 /**
  * A UnicodeSet.  Use the uset_* API to manipulate.  Create with
@@ -36,9 +37,39 @@ struct USet;
  * @draft ICU 2.4
  */
 typedef struct USet USet;
+#endif
 
+/**
+ * Bitmask values to be passed to the UnicodeSet constructor or
+ * applyPattern() taking an option parameter.
+ * @draft
+ */
 enum {
-    USET_SERIALIZED_STATIC_ARRAY_CAPACITY=8     /**< enough for any single-code point set */
+    /**
+     * Ignore white space within patterns unless quoted or escaped.
+     * @draft
+     */
+    USET_IGNORE_SPACE = 1,  
+
+    /**
+     * Enable case insensitive matching.  E.g., "[ab]" with this flag
+     * will match 'a', 'A', 'b', and 'B'.  "[^ab]" with this flag will
+     * match all except 'a', 'A', 'b', and 'B'.
+     * @draft
+     */
+    USET_CASE_INSENSITIVE = 2,  
+
+    /**
+     * Bitmask for UnicodeSet::closeOver() indicating letter case.
+     * This may be ORed together with other selectors.
+     * @internal
+     */
+    USET_CASE = 2,
+    /**
+     * Enough for any single-code point set
+     * @internal
+     */
+    USET_SERIALIZED_STATIC_ARRAY_CAPACITY=8
 };
 
 /**
@@ -98,6 +129,20 @@ U_CAPI USet* U_EXPORT2
 uset_openPattern(const UChar* pattern, int32_t patternLength,
                  UErrorCode* ec);
 
+/**
+ * Creates a set from the given pattern.  See the UnicodeSet class
+ * description for the syntax of the pattern language.
+ * @param pattern a string specifying what characters are in the set
+ * @param patternLength the length of the pattern, or -1 if null
+ * terminated
+ * @param ec the error code
+ * @draft ICU 2.4
+ */
+U_CAPI USet* U_EXPORT2
+uset_openPatternOptions(const UChar* pattern, int32_t patternLength,
+                 uint32_t options,
+                 UErrorCode* ec);
+
 /**
  * Disposes of the storage used by a USet object.  This function should
  * be called exactly once for objects returned by uset_open().
diff --git a/icu4c/source/common/uset.cpp b/icu4c/source/common/uset.cpp
index 445bc92e637..8efc5313ac6 100644
--- a/icu4c/source/common/uset.cpp
+++ b/icu4c/source/common/uset.cpp
@@ -35,7 +35,8 @@ uset_open(UChar32 start, UChar32 end) {
 
 U_CAPI USet* U_EXPORT2
 uset_openPattern(const UChar* pattern, int32_t patternLength,
-                 UErrorCode* ec) {
+                 UErrorCode* ec)
+{
     UnicodeString pat(patternLength==-1, pattern, patternLength);
     UnicodeSet* set = new UnicodeSet(pat, *ec);
     /* test for NULL */
@@ -51,6 +52,27 @@ uset_openPattern(const UChar* pattern, int32_t patternLength,
     return (USet*) set;
 }
 
+U_CAPI USet* U_EXPORT2
+uset_openPatternOptions(const UChar* pattern, int32_t patternLength,
+                 uint32_t options,
+                 UErrorCode* ec)
+{
+    UnicodeString pat(patternLength==-1, pattern, patternLength);
+    UnicodeSet* set = new UnicodeSet(pat, options, *ec);
+    /* test for NULL */
+    if(set == 0) {
+        *ec = U_MEMORY_ALLOCATION_ERROR;
+        return 0;
+    }
+    
+    if (U_FAILURE(*ec)) {
+        delete set;
+        set = NULL;
+    }
+    return (USet*) set;
+}
+
+
 U_CAPI void U_EXPORT2
 uset_close(USet* set) {
     delete (UnicodeSet*) set;