diff --git a/java/src/com/android/inputmethod/latin/RichInputConnection.java b/java/src/com/android/inputmethod/latin/RichInputConnection.java
index 925381b..8580a6e 100644
--- a/java/src/com/android/inputmethod/latin/RichInputConnection.java
+++ b/java/src/com/android/inputmethod/latin/RichInputConnection.java
@@ -30,6 +30,7 @@
 import com.android.inputmethod.latin.settings.SettingsValues;
 import com.android.inputmethod.latin.utils.CapsModeUtils;
 import com.android.inputmethod.latin.utils.DebugLogUtils;
+import com.android.inputmethod.latin.utils.SpannableStringUtils;
 import com.android.inputmethod.latin.utils.StringUtils;
 import com.android.inputmethod.latin.utils.TextRange;
 import com.android.inputmethod.research.ResearchLogger;
@@ -610,8 +611,9 @@
         // We don't use TextUtils#concat because it copies all spans without respect to their
         // nature. If the text includes a PARAGRAPH span and it has been split, then
         // TextUtils#concat will crash when it tries to concat both sides of it.
-        return new TextRange(StringUtils.concatWithNonParagraphSuggestionSpansOnly(before, after),
-                startIndexInBefore, before.length() + endIndexInAfter, before.length());
+        return new TextRange(
+                SpannableStringUtils.concatWithNonParagraphSuggestionSpansOnly(before, after),
+                        startIndexInBefore, before.length() + endIndexInAfter, before.length());
     }
 
     public boolean isCursorTouchingWord(final SettingsValues settingsValues) {
diff --git a/java/src/com/android/inputmethod/latin/utils/SpannableStringUtils.java b/java/src/com/android/inputmethod/latin/utils/SpannableStringUtils.java
new file mode 100644
index 0000000..b51fd93
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/utils/SpannableStringUtils.java
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.inputmethod.latin.utils;
+
+import android.text.Spannable;
+import android.text.SpannableString;
+import android.text.Spanned;
+import android.text.SpannedString;
+import android.text.TextUtils;
+import android.text.style.SuggestionSpan;
+
+public final class SpannableStringUtils {
+    /**
+     * Copies the spans from the region <code>start...end</code> in
+     * <code>source</code> to the region
+     * <code>destoff...destoff+end-start</code> in <code>dest</code>.
+     * Spans in <code>source</code> that begin before <code>start</code>
+     * or end after <code>end</code> but overlap this range are trimmed
+     * as if they began at <code>start</code> or ended at <code>end</code>.
+     * Only SuggestionSpans that don't have the SPAN_PARAGRAPH span are copied.
+     *
+     * This code is almost entirely taken from {@link TextUtils#copySpansFrom}, except for the
+     * kind of span that is copied.
+     *
+     * @throws IndexOutOfBoundsException if any of the copied spans
+     * are out of range in <code>dest</code>.
+     */
+    public static void copyNonParagraphSuggestionSpansFrom(Spanned source, int start, int end,
+                                     Spannable dest, int destoff) {
+        Object[] spans = source.getSpans(start, end, SuggestionSpan.class);
+
+        for (int i = 0; i < spans.length; i++) {
+            int fl = source.getSpanFlags(spans[i]);
+            if (0 != (fl & Spannable.SPAN_PARAGRAPH)) continue;
+
+            int st = source.getSpanStart(spans[i]);
+            int en = source.getSpanEnd(spans[i]);
+
+            if (st < start)
+                st = start;
+            if (en > end)
+                en = end;
+
+            dest.setSpan(spans[i], st - start + destoff, en - start + destoff,
+                         fl);
+        }
+    }
+
+    /**
+     * Returns a CharSequence concatenating the specified CharSequences, retaining their
+     * SuggestionSpans that don't have the PARAGRAPH flag, but not other spans.
+     *
+     * This code is almost entirely taken from {@link TextUtils#concat(CharSequence...)}, except
+     * it calls copyNonParagraphSuggestionSpansFrom instead of {@link TextUtils#copySpansFrom}.
+     */
+    public static CharSequence concatWithNonParagraphSuggestionSpansOnly(CharSequence... text) {
+        if (text.length == 0) {
+            return "";
+        }
+
+        if (text.length == 1) {
+            return text[0];
+        }
+
+        boolean spanned = false;
+        for (int i = 0; i < text.length; i++) {
+            if (text[i] instanceof Spanned) {
+                spanned = true;
+                break;
+            }
+        }
+
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < text.length; i++) {
+            sb.append(text[i]);
+        }
+
+        if (!spanned) {
+            return sb.toString();
+        }
+
+        SpannableString ss = new SpannableString(sb);
+        int off = 0;
+        for (int i = 0; i < text.length; i++) {
+            int len = text[i].length();
+
+            if (text[i] instanceof Spanned) {
+                copyNonParagraphSuggestionSpansFrom((Spanned) text[i], 0, len, ss, off);
+            }
+
+            off += len;
+        }
+
+        return new SpannedString(ss);
+    }
+}
diff --git a/java/src/com/android/inputmethod/latin/utils/StringUtils.java b/java/src/com/android/inputmethod/latin/utils/StringUtils.java
index 327780a..121aecf 100644
--- a/java/src/com/android/inputmethod/latin/utils/StringUtils.java
+++ b/java/src/com/android/inputmethod/latin/utils/StringUtils.java
@@ -20,12 +20,7 @@
 import com.android.inputmethod.latin.Constants;
 import com.android.inputmethod.latin.settings.SettingsValues;
 
-import android.text.Spannable;
-import android.text.SpannableString;
-import android.text.Spanned;
-import android.text.SpannedString;
 import android.text.TextUtils;
-import android.text.style.SuggestionSpan;
 import android.util.JsonReader;
 import android.util.JsonWriter;
 import android.util.Log;
@@ -467,88 +462,4 @@
         }
         return "";
     }
-
-    /**
-     * Copies the spans from the region <code>start...end</code> in
-     * <code>source</code> to the region
-     * <code>destoff...destoff+end-start</code> in <code>dest</code>.
-     * Spans in <code>source</code> that begin before <code>start</code>
-     * or end after <code>end</code> but overlap this range are trimmed
-     * as if they began at <code>start</code> or ended at <code>end</code>.
-     * Only SuggestionSpans that don't have the SPAN_PARAGRAPH span are copied.
-     *
-     * This code is almost entirely taken from {@link TextUtils#copySpansFrom}, except for the
-     * kind of span that is copied.
-     *
-     * @throws IndexOutOfBoundsException if any of the copied spans
-     * are out of range in <code>dest</code>.
-     */
-    public static void copyNonParagraphSuggestionSpansFrom(Spanned source, int start, int end,
-                                     Spannable dest, int destoff) {
-        Object[] spans = source.getSpans(start, end, SuggestionSpan.class);
-
-        for (int i = 0; i < spans.length; i++) {
-            int fl = source.getSpanFlags(spans[i]);
-            if (0 != (fl & Spannable.SPAN_PARAGRAPH)) continue;
-
-            int st = source.getSpanStart(spans[i]);
-            int en = source.getSpanEnd(spans[i]);
-
-            if (st < start)
-                st = start;
-            if (en > end)
-                en = end;
-
-            dest.setSpan(spans[i], st - start + destoff, en - start + destoff,
-                         fl);
-        }
-    }
-
-    /**
-     * Returns a CharSequence concatenating the specified CharSequences, retaining their
-     * SuggestionSpans that don't have the PARAGRAPH flag, but not other spans.
-     *
-     * This code is almost entirely taken from {@link TextUtils#concat(CharSequence...)}, except
-     * it calls copyNonParagraphSuggestionSpansFrom instead of {@link TextUtils#copySpansFrom}.
-     */
-    public static CharSequence concatWithNonParagraphSuggestionSpansOnly(CharSequence... text) {
-        if (text.length == 0) {
-            return "";
-        }
-
-        if (text.length == 1) {
-            return text[0];
-        }
-
-        boolean spanned = false;
-        for (int i = 0; i < text.length; i++) {
-            if (text[i] instanceof Spanned) {
-                spanned = true;
-                break;
-            }
-        }
-
-        StringBuilder sb = new StringBuilder();
-        for (int i = 0; i < text.length; i++) {
-            sb.append(text[i]);
-        }
-
-        if (!spanned) {
-            return sb.toString();
-        }
-
-        SpannableString ss = new SpannableString(sb);
-        int off = 0;
-        for (int i = 0; i < text.length; i++) {
-            int len = text[i].length();
-
-            if (text[i] instanceof Spanned) {
-                copyNonParagraphSuggestionSpansFrom((Spanned) text[i], 0, len, ss, off);
-            }
-
-            off += len;
-        }
-
-        return new SpannedString(ss);
-    }
 }
diff --git a/tests/src/com/android/inputmethod/latin/utils/SpannableStringUtilsTests.java b/tests/src/com/android/inputmethod/latin/utils/SpannableStringUtilsTests.java
new file mode 100644
index 0000000..fa6ad16
--- /dev/null
+++ b/tests/src/com/android/inputmethod/latin/utils/SpannableStringUtilsTests.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.inputmethod.latin.utils;
+
+import android.test.AndroidTestCase;
+import android.test.suitebuilder.annotation.SmallTest;
+import android.text.style.SuggestionSpan;
+import android.text.style.URLSpan;
+import android.text.SpannableStringBuilder;
+import android.text.Spannable;
+import android.text.Spanned;
+
+@SmallTest
+public class SpannableStringUtilsTests extends AndroidTestCase {
+    public void testConcatWithSuggestionSpansOnly() {
+        SpannableStringBuilder s = new SpannableStringBuilder("test string\ntest string\n"
+                + "test string\ntest string\ntest string\ntest string\ntest string\ntest string\n"
+                + "test string\ntest string\n");
+        final int N = 10;
+        for (int i = 0; i < N; ++i) {
+            // Put a PARAGRAPH-flagged span that should not be found in the result.
+            s.setSpan(new SuggestionSpan(getContext(),
+                    new String[] {"" + i}, Spannable.SPAN_PARAGRAPH),
+                    i * 12, i * 12 + 12, Spannable.SPAN_PARAGRAPH);
+            // Put a normal suggestion span that should be found in the result.
+            s.setSpan(new SuggestionSpan(getContext(), new String[] {"" + i}, 0), i, i * 2, 0);
+            // Put a URL span than should not be found in the result.
+            s.setSpan(new URLSpan("http://a"), i, i * 2, 0);
+        }
+
+        final CharSequence a = s.subSequence(0, 15);
+        final CharSequence b = s.subSequence(15, s.length());
+        final Spanned result =
+                (Spanned)SpannableStringUtils.concatWithNonParagraphSuggestionSpansOnly(a, b);
+
+        Object[] spans = result.getSpans(0, result.length(), SuggestionSpan.class);
+        for (int i = 0; i < spans.length; i++) {
+            final int flags = result.getSpanFlags(spans[i]);
+            assertEquals("Should not find a span with PARAGRAPH flag",
+                    flags & Spannable.SPAN_PARAGRAPH, 0);
+            assertTrue("Should be a SuggestionSpan", spans[i] instanceof SuggestionSpan);
+        }
+    }
+}
diff --git a/tests/src/com/android/inputmethod/latin/utils/StringUtilsTests.java b/tests/src/com/android/inputmethod/latin/utils/StringUtilsTests.java
index eb9fb98..4e396a1 100644
--- a/tests/src/com/android/inputmethod/latin/utils/StringUtilsTests.java
+++ b/tests/src/com/android/inputmethod/latin/utils/StringUtilsTests.java
@@ -20,11 +20,6 @@
 
 import android.test.AndroidTestCase;
 import android.test.suitebuilder.annotation.SmallTest;
-import android.text.style.SuggestionSpan;
-import android.text.style.URLSpan;
-import android.text.SpannableStringBuilder;
-import android.text.Spannable;
-import android.text.Spanned;
 
 import java.util.Arrays;
 import java.util.List;
@@ -285,34 +280,4 @@
             assertEquals(objs[i], newObjArray.get(i));
         }
     }
-
-    public void testConcatWithSuggestionSpansOnly() {
-        SpannableStringBuilder s = new SpannableStringBuilder("test string\ntest string\n"
-                + "test string\ntest string\ntest string\ntest string\ntest string\ntest string\n"
-                + "test string\ntest string\n");
-        final int N = 10;
-        for (int i = 0; i < N; ++i) {
-            // Put a PARAGRAPH-flagged span that should not be found in the result.
-            s.setSpan(new SuggestionSpan(getContext(),
-                    new String[] {"" + i}, Spannable.SPAN_PARAGRAPH),
-                    i * 12, i * 12 + 12, Spannable.SPAN_PARAGRAPH);
-            // Put a normal suggestion span that should be found in the result.
-            s.setSpan(new SuggestionSpan(getContext(), new String[] {"" + i}, 0), i, i * 2, 0);
-            // Put a URL span than should not be found in the result.
-            s.setSpan(new URLSpan("http://a"), i, i * 2, 0);
-        }
-
-        final CharSequence a = s.subSequence(0, 15);
-        final CharSequence b = s.subSequence(15, s.length());
-        final Spanned result =
-                (Spanned)StringUtils.concatWithNonParagraphSuggestionSpansOnly(a, b);
-
-        Object[] spans = result.getSpans(0, result.length(), SuggestionSpan.class);
-        for (int i = 0; i < spans.length; i++) {
-            final int flags = result.getSpanFlags(spans[i]);
-            assertEquals("Should not find a span with PARAGRAPH flag",
-                    flags & Spannable.SPAN_PARAGRAPH, 0);
-            assertTrue("Should be a SuggestionSpan", spans[i] instanceof SuggestionSpan);
-        }
-    }
 }