diff --git a/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/TabsToSpaces.java b/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/TabsToSpaces.java
new file mode 100644
index 000000000..35e8c763d
--- /dev/null
+++ b/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/TabsToSpaces.java
@@ -0,0 +1,120 @@
+package org.apache.tools.ant.filters;
+
+import java.io.FilterReader;
+import java.io.IOException;
+import java.io.Reader;
+import java.util.Hashtable;
+
+import org.apache.tools.ant.types.Parameter;
+import org.apache.tools.ant.types.Parameterizable;
+
+/**
+ * Converts tabs to spaces.
+ *
+ * Example Usage:
+ * =============
+ *
+ *
+ *
+ *
+ * @author Magesh Umasankar
+ */
+public final class TabsToSpaces
+ extends FilterReader
+ implements Parameterizable
+{
+ private static final int DEFAULT_TAB_LENGTH = 8;
+
+ private static final String TAB_LENGTH_KEY = "tablength";
+
+ private Parameter[] parameters;
+
+ private boolean initialized;
+
+ private int tabLength = DEFAULT_TAB_LENGTH;
+
+ private int spacesRemaining = 0;
+
+ /**
+ * Create a new filtered reader.
+ *
+ * @param in a Reader object providing the underlying stream.
+ */
+ public TabsToSpaces(final Reader in) {
+ super(in);
+ }
+
+ /**
+ * Convert tabs with spaces
+ */
+ public final int read() throws IOException {
+ if (!initialized) {
+ initialize();
+ initialized = true;
+ }
+
+ int ch = -1;
+
+ if (spacesRemaining > 0) {
+ spacesRemaining--;
+ ch = ' ';
+ } else {
+ ch = in.read();
+ if (ch == '\t') {
+ spacesRemaining = tabLength - 1;
+ ch = ' ';
+ }
+ }
+ return ch;
+ }
+
+ public final int read(final char cbuf[], final int off,
+ final int len) throws IOException {
+ for (int i = 0; i < len; i++) {
+ final int ch = read();
+ if (ch == -1) {
+ if (i == 0) {
+ return -1;
+ } else {
+ return i;
+ }
+ }
+ cbuf[off + i] = (char) ch;
+ }
+ return len;
+ }
+
+ public final long skip(long n) throws IOException {
+ for (long i = 0; i < n; i++) {
+ if (in.read() == -1) {
+ return i;
+ }
+ }
+ return n;
+ }
+
+ /**
+ * Set Parameters
+ */
+ public final void setParameters(final Parameter[] parameters) {
+ this.parameters = parameters;
+ initialized = false;
+ }
+
+ /**
+ * Initialize tokens and load the replacee-replacer hashtable.
+ */
+ private final void initialize() {
+ if (parameters != null) {
+ for (int i = 0; i < parameters.length; i++) {
+ if (parameters[i] != null) {
+ if (TAB_LENGTH_KEY.equals(parameters[i].getName())) {
+ tabLength =
+ new Integer(parameters[i].getValue()).intValue();
+ break;
+ }
+ }
+ }
+ }
+ }
+}