diff --git a/factor/jedit/FactorBufferProcessor.java b/factor/jedit/FactorBufferProcessor.java
new file mode 100644
index 0000000000..a7ea200653
--- /dev/null
+++ b/factor/jedit/FactorBufferProcessor.java
@@ -0,0 +1,93 @@
+/* :folding=explicit:collapseFolds=1: */
+
+/*
+ * $Id$
+ *
+ * Copyright (C) 2005 Slava Pestov.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package factor.jedit;
+
+import factor.*;
+import java.io.IOException;
+import java.util.*;
+import org.gjt.sp.jedit.Buffer;
+
+/**
+ * A class used to compile all words in a file, or infer stack effects of all
+ * words in a file, etc.
+ */
+public class FactorBufferProcessor
+{
+	private String code;
+	private LinkedHashMap results;
+
+	//{{{ FactorBufferProcessor constructor
+	/**
+	 * @param buffer The buffer
+	 * @param code The snippet of code to apply to each word. The snippet
+	 * should print a string.
+	 */
+	public FactorBufferProcessor(Buffer buffer, String code, ExternalFactor factor)
+		throws IOException
+	{
+		results = new LinkedHashMap();
+		this.code = code;
+
+		Cons words = (Cons)buffer.getProperty(
+			FactorSideKickParser.WORDS_PROPERTY);
+		Cons wordCodeMap = null;
+		while(words != null)
+		{
+			FactorWord word = (FactorWord)words.car;
+
+			StringBuffer expression = new StringBuffer();
+			expression.append(FactorPlugin.factorWord(word));
+			expression.append(" ");
+			expression.append(code);
+
+			results.put(word,factor.eval(expression.toString()));
+
+			words = words.next();
+		}
+	} //}}}
+	
+	//{{{ insertResults() method
+	public void insertResults(Buffer buffer, int offset)
+	{
+		StringBuffer result = new StringBuffer();
+		Iterator iter = results.entrySet().iterator();
+		while(iter.hasNext())
+		{
+			Map.Entry entry = (Map.Entry)iter.next();
+			result.append("[ ");
+			result.append(((String)entry.getValue()).trim());
+			result.append(" ] [ \\ ");
+			result.append(FactorReader.unparseObject(entry.getKey()));
+			result.append(code);
+			result.append(" ] unit-test\n");
+		}
+		buffer.insert(offset,result.toString());
+	} //}}}
+}
diff --git a/factor/jedit/FactorPlugin.java b/factor/jedit/FactorPlugin.java
index b1b1c583ec..b8c7a4e3c0 100644
--- a/factor/jedit/FactorPlugin.java
+++ b/factor/jedit/FactorPlugin.java
@@ -193,6 +193,16 @@ public class FactorPlugin extends EditPlugin
 			"sidekick.SideKickParser","factor");
 	} //}}}
 	
+	//{{{ getParsedData() method
+	public static FactorParsedData getParsedData(View view)
+	{
+		SideKickParsedData data = SideKickParsedData.getParsedData(view);
+		if(data instanceof FactorParsedData)
+			return (FactorParsedData)data;
+		else
+			return null;
+	} //}}}
+
 	//{{{ evalInListener() method
 	public static void evalInListener(View view, String cmd)
 	{
@@ -214,14 +224,11 @@ public class FactorPlugin extends EditPlugin
 	 */
 	public static FactorWord lookupWord(View view, String word)
 	{
-		SideKickParsedData data = SideKickParsedData.getParsedData(view);
-		if(data instanceof FactorParsedData)
-		{
-			FactorParsedData fdata = (FactorParsedData)data;
-			return getExternalInstance().searchVocabulary(fdata.use,word);
-		}
-		else
+		FactorParsedData fdata = getParsedData(view);
+		if(fdata == null)
 			return null;
+		else
+			return getExternalInstance().searchVocabulary(fdata.use,word);
 	} //}}}
 
 	//{{{ factorWord() method
@@ -230,18 +237,14 @@ public class FactorPlugin extends EditPlugin
 	 */
 	public static String factorWord(View view, String word)
 	{
-		SideKickParsedData data = SideKickParsedData
-			.getParsedData(view);
-		if(data instanceof FactorParsedData)
-		{
-			FactorParsedData fdata = (FactorParsedData)data;
-			return "\""
-				+ FactorReader.charsToEscapes(word)
-				+ "\" " + FactorReader.unparseObject(fdata.use)
-				+ " search";
-		}
-		else
+		FactorParsedData fdata = getParsedData(view);
+		if(fdata == null)
 			return null;
+
+		return "\""
+			+ FactorReader.charsToEscapes(word)
+			+ "\" " + FactorReader.unparseObject(fdata.use)
+			+ " search";
 	} //}}}
 
 	//{{{ factorWord() method
@@ -403,16 +406,14 @@ public class FactorPlugin extends EditPlugin
 	//{{{ isUsed() method
 	public static boolean isUsed(View view, String vocab)
 	{
-		SideKickParsedData data = SideKickParsedData
-			.getParsedData(view);
-		if(data instanceof FactorParsedData)
+		FactorParsedData fdata = getParsedData(view);
+		if(fdata == null)
+			return false;
+		else
 		{
-			FactorParsedData fdata = (FactorParsedData)data;
 			Cons use = fdata.use;
 			return Cons.contains(use,vocab);
 		}
-		else
-			return false;
 	} //}}}
 
 	//{{{ findAllWordsNamed() method
@@ -514,9 +515,8 @@ public class FactorPlugin extends EditPlugin
 		if(selection == null)
 			selection = "";
 
-		SideKickParsedData data = SideKickParsedData
-			.getParsedData(view);
-		if(!(data instanceof FactorParsedData))
+		FactorParsedData data = getParsedData(view);
+		if(data == null)
 		{
 			view.getToolkit().beep();
 			return;
diff --git a/factor/jedit/FactorSideKickParser.java b/factor/jedit/FactorSideKickParser.java
index 6c3649d572..8afd403d1a 100644
--- a/factor/jedit/FactorSideKickParser.java
+++ b/factor/jedit/FactorSideKickParser.java
@@ -245,11 +245,10 @@ public class FactorSideKickParser extends SideKickParser
 	 */
 	public SideKickCompletion complete(EditPane editPane, int caret)
 	{
-		SideKickParsedData _data = SideKickParsedData
-			.getParsedData(editPane.getView());
-		if(!(_data instanceof FactorParsedData))
+		FactorParsedData data = FactorPlugin.getParsedData(
+			editPane.getView());
+		if(data == null)
 			return null;
-		FactorParsedData data = (FactorParsedData)_data;
 
 		Buffer buffer = editPane.getBuffer();
 
diff --git a/factor/jedit/WordPreview.java b/factor/jedit/WordPreview.java
index fcf52aeaf2..6e33284617 100644
--- a/factor/jedit/WordPreview.java
+++ b/factor/jedit/WordPreview.java
@@ -134,10 +134,10 @@ public class WordPreview implements ActionListener, CaretListener
 		if(SideKickPlugin.isParsingBuffer(view.getBuffer()))
 			return;
 
-		SideKickParsedData data = SideKickParsedData.getParsedData(view);
-		if(data instanceof FactorParsedData)
+		FactorParsedData data = FactorPlugin.getParsedData(view);
+		if(data != null)
 		{
-			FactorWord w = getWordAtCaret((FactorParsedData)data);
+			FactorWord w = getWordAtCaret(data);
 			if(w != null)
 			{
 				view.getStatus().setMessageAndClear(