Index: lucene/queryparser/src/java/org/apache/lucene/queryparser/classic/QueryParser.jj
===================================================================
--- lucene/queryparser/src/java/org/apache/lucene/queryparser/classic/QueryParser.jj	(revision 1440919)
+++ lucene/queryparser/src/java/org/apache/lucene/queryparser/classic/QueryParser.jj	(working copy)
@@ -162,7 +162,7 @@
 | <CARAT:     "^" > : Boost
 | <QUOTED:     "\"" (<_QUOTED_CHAR>)* "\"">
 | <TERM:      <_TERM_START_CHAR> (<_TERM_CHAR>)*  >
-| <FUZZY_SLOP:     "~" ( (<_NUM_CHAR>)+ ( "." (<_NUM_CHAR>)+ )? )? >
+| <FUZZY_SLOP:     "~" ((<_NUM_CHAR>)+ (( "." (<_NUM_CHAR>)+ )? (<_TERM_CHAR>)*) | (<_TERM_CHAR>)*)  >
 | <PREFIXTERM:  ("*") | ( <_TERM_START_CHAR> (<_TERM_CHAR>)* "*" ) >
 | <WILDTERM:  (<_TERM_START_CHAR> | [ "*", "?" ]) (<_TERM_CHAR> | ( [ "*", "?" ] ))* >
 | <REGEXPTERM: "/" (~[ "/" ] | "\\/" )* "/" >
Index: lucene/queryparser/src/java/org/apache/lucene/queryparser/classic/QueryParserBase.java
===================================================================
--- lucene/queryparser/src/java/org/apache/lucene/queryparser/classic/QueryParserBase.java	(revision 1440919)
+++ lucene/queryparser/src/java/org/apache/lucene/queryparser/classic/QueryParserBase.java	(working copy)
@@ -1070,22 +1070,29 @@
     } else if (regexp) {
       q = getRegexpQuery(qfield, term.image.substring(1, term.image.length()-1));
     } else if (fuzzy) {
-      float fms = fuzzyMinSim;
-      try {
-        fms = Float.valueOf(fuzzySlop.image.substring(1)).floatValue();
-      } catch (Exception ignored) { }
-      if(fms < 0.0f){
-        throw new ParseException("Minimum similarity for a FuzzyQuery has to be between 0.0f and 1.0f !");
-      } else if (fms >= 1.0f && fms != (int) fms) {
-        throw new ParseException("Fractional edit distances are not allowed!");
-      }
-      q = getFuzzyQuery(qfield, termImage, fms);
+      q = handleBareFuzzy(qfield, fuzzySlop, termImage);
     } else {
       q = getFieldQuery(qfield, termImage, false);
     }
     return q;
   }
 
+  Query handleBareFuzzy(String qfield, Token fuzzySlop, String termImage)
+      throws ParseException {
+    Query q;
+    float fms = fuzzyMinSim;
+    try {
+      fms = Float.valueOf(fuzzySlop.image.substring(1)).floatValue();
+    } catch (Exception ignored) { }
+    if(fms < 0.0f){
+      throw new ParseException("Minimum similarity for a FuzzyQuery has to be between 0.0f and 1.0f !");
+    } else if (fms >= 1.0f && fms != (int) fms) {
+      throw new ParseException("Fractional edit distances are not allowed!");
+    }
+    q = getFuzzyQuery(qfield, termImage, fms);
+    return q;
+  }
+
   // extracted from the .jj grammar
   Query handleQuotedTerm(String qfield, Token term, Token fuzzySlop) throws ParseException {
     int s = phraseSlop;  // default
Index: lucene/queryparser/src/test/org/apache/lucene/queryparser/classic/TestQueryParser.java
===================================================================
--- lucene/queryparser/src/test/org/apache/lucene/queryparser/classic/TestQueryParser.java	(revision 1440919)
+++ lucene/queryparser/src/test/org/apache/lucene/queryparser/classic/TestQueryParser.java	(working copy)
@@ -17,6 +17,7 @@
  * limitations under the License.
  */
 
+
 import org.apache.lucene.analysis.Analyzer;
 import org.apache.lucene.analysis.MockAnalyzer;
 import org.apache.lucene.analysis.MockTokenizer;
@@ -29,6 +30,7 @@
 import org.apache.lucene.search.BooleanQuery;
 import org.apache.lucene.search.Query;
 import org.apache.lucene.search.TermQuery;
+import org.junit.Test;
 
 /**
  * Tests QueryParser.
@@ -160,6 +162,29 @@
     }
   }
   
+  @Test
+  public void testFuzzySlopeExtendability() throws ParseException {
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "a",  new MockAnalyzer(random(), MockTokenizer.WHITESPACE, false)) {
+
+      @Override
+      Query handleBareFuzzy(String qfield, Token fuzzySlop, String termImage)
+          throws ParseException {
+        
+        if(fuzzySlop.image.endsWith("€")) {
+          float fms = fuzzyMinSim;
+          try {
+            fms = Float.valueOf(fuzzySlop.image.substring(1, fuzzySlop.image.length()-2)).floatValue();
+          } catch (Exception ignored) { }
+          float value = Float.parseFloat(termImage);
+          return getRangeQuery(qfield, Float.toString(value-fms/2.f), Float.toString(value+fms/2.f), true, true);
+        }
+        return super.handleBareFuzzy(qfield, fuzzySlop, termImage);
+      }
+      
+    };
+    assertEquals(qp.parse("a:[11.45 TO 13.45]"), qp.parse("12.45~1€"));
+  }
+  
   @Override
   public void testStarParsing() throws Exception {
     final int[] type = new int[1];