diff --git a/cobigen/cobigen-textmerger/pom.xml b/cobigen/cobigen-textmerger/pom.xml
index a554781814..ba7c95ba8f 100644
--- a/cobigen/cobigen-textmerger/pom.xml
+++ b/cobigen/cobigen-textmerger/pom.xml
@@ -2,7 +2,7 @@
   <modelVersion>4.0.0</modelVersion>
   <artifactId>textmerger</artifactId>
   <packaging>jar</packaging>
-  <version>2.1.0</version>
+  <version>7.0.0</version>
   <name>CobiGen - Text Merger Plug-in</name>
   <description>CobiGen - Text Merger Plug-in</description>
 
@@ -20,7 +20,7 @@
     <dependency>
       <groupId>com.devonfw.cobigen</groupId>
       <artifactId>core-api</artifactId>
-      <version>5.0.0</version>
+      <version>[7.0.0,)</version>
     </dependency>
     <!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
     <dependency>
@@ -31,7 +31,7 @@
     <dependency>
       <groupId>com.devonfw.cobigen</groupId>
       <artifactId>core-test</artifactId>
-      <version>5.0.0</version>
+      <version>[7.0.0,)</version>
       <scope>test</scope>
     </dependency>
   </dependencies>
diff --git a/cobigen/cobigen-textmerger/src/main/java/com/devonfw/cobigen/textmerger/TextMergerPluginActivator.java b/cobigen/cobigen-textmerger/src/main/java/com/devonfw/cobigen/textmerger/TextMergerPluginActivator.java
index 44aa418e50..6c8d03feeb 100644
--- a/cobigen/cobigen-textmerger/src/main/java/com/devonfw/cobigen/textmerger/TextMergerPluginActivator.java
+++ b/cobigen/cobigen-textmerger/src/main/java/com/devonfw/cobigen/textmerger/TextMergerPluginActivator.java
@@ -2,23 +2,34 @@
 
 import java.util.List;
 
+import com.devonfw.cobigen.api.annotation.Activation;
 import com.devonfw.cobigen.api.extension.GeneratorPluginActivator;
 import com.devonfw.cobigen.api.extension.Merger;
 import com.devonfw.cobigen.api.extension.TriggerInterpreter;
 import com.google.common.collect.Lists;
 
 /**
- * This Plugin Activator registers a merger, which only appends the patch text to the original existing file
- * @author mbrunnli (06.04.2014)
+ * This plug-in activator registers a merger, which only appends the patch text to the original existing file
  */
+@Activation(byMergeStrategy = { TextMergerPluginActivator.TEXTMERGE_APPEND,
+    TextMergerPluginActivator.TEXTMERGE_APPEND_WITH_NEW_LINE, TextMergerPluginActivator.TEXTMERGE_OVERRIDE })
 public class TextMergerPluginActivator implements GeneratorPluginActivator {
 
+    /** Merge strategy to append text parts (prefer patch) */
+    static final String TEXTMERGE_OVERRIDE = "textmerge_override";
+
+    /** Merge strategy to append text parts while adding a new line before */
+    static final String TEXTMERGE_APPEND_WITH_NEW_LINE = "textmerge_appendWithNewLine";
+
+    /** Merge strategy to append text parts (prefer base) */
+    static final String TEXTMERGE_APPEND = "textmerge_append";
+
     @Override
     public List<Merger> bindMerger() {
         List<Merger> merger = Lists.newLinkedList();
-        merger.add(new TextAppender("textmerge_append", false));
-        merger.add(new TextAppender("textmerge_appendWithNewLine", true));
-        merger.add(new TextAppender("textmerge_override", false));
+        merger.add(new TextAppender(TEXTMERGE_APPEND, false));
+        merger.add(new TextAppender(TEXTMERGE_APPEND_WITH_NEW_LINE, true));
+        merger.add(new TextAppender(TEXTMERGE_OVERRIDE, false));
         return merger;
     }
 
diff --git a/cobigen/cobigen-textmerger/src/main/java/com/devonfw/cobigen/textmerger/anchorextension/MergeUtil.java b/cobigen/cobigen-textmerger/src/main/java/com/devonfw/cobigen/textmerger/anchorextension/MergeUtil.java
index fe9b7b1cc3..025386dd4c 100644
--- a/cobigen/cobigen-textmerger/src/main/java/com/devonfw/cobigen/textmerger/anchorextension/MergeUtil.java
+++ b/cobigen/cobigen-textmerger/src/main/java/com/devonfw/cobigen/textmerger/anchorextension/MergeUtil.java
@@ -10,6 +10,8 @@
 import java.util.regex.Pattern;
 
 import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Helper class that implements a few very specific methods to help with working on maps and regular
@@ -17,6 +19,9 @@
  */
 public class MergeUtil {
 
+    /** Logger instance. */
+    private static final Logger LOG = LoggerFactory.getLogger(MergeUtil.class);
+
     /**
      * Regular expression matching what correct anchors should look like.
      */
@@ -50,6 +55,8 @@ public class MergeUtil {
      * merge(File,String,String)
      * @param toSplit
      *            The string that is to be split by anchors
+     * @param defaultMergeStrategy
+     *            the default merge strategy to fall back
      * @return a LinkedHashMap which contains anchors as keys and the following text as values
      * @throws Exception
      *             when an anchor contains a wrong definition
@@ -58,13 +65,14 @@ public static LinkedHashMap<Anchor, String> splitByAnchors(String toSplit, Merge
         throws Exception {
         LinkedHashMap<Anchor, String> result = new LinkedHashMap<>();
         toSplit.trim();
-        if (!StringUtils.substring(toSplit, 0, StringUtils.ordinalIndexOf(toSplit, "\n", 1) - lineSepLength).trim()
-            .matches(anchorRegexTrimmed)) {
+        String firstLine =
+            StringUtils.substring(toSplit, 0, StringUtils.ordinalIndexOf(toSplit, "\n", 1) - lineSepLength + 1).trim();
+        if (!firstLine.matches(anchorRegexTrimmed)) {
+            LOG.debug("Line {} does not match {}", firstLine, anchorRegexTrimmed);
             throw new Exception(
                 "Incorrect document structure. Anchors are defined but there is no anchor at the start of the document.\n"
                     + "See https://github.com/devonfw/cobigen/wiki/cobigen-textmerger#general and "
-                    + "https://github.com/devonfw/cobigen/wiki/cobigen-textmerger#error-list "
-                    + "for more details");
+                    + "https://github.com/devonfw/cobigen/wiki/cobigen-textmerger#error-list " + "for more details");
         }
 
         toSplit = toSplit + System.lineSeparator() + "anchor:::anchorend" + System.lineSeparator();
@@ -227,7 +235,6 @@ public static ArrayList<Anchor> joinKeySetsRetainOrder(Map<Anchor, String> base,
         if (checkSame.retainAll(patch.keySet())) {
             int i = 0;
             int x = 0;
-            String tmp = "";
 
             for (Anchor s : base.keySet()) {
                 i++;
diff --git a/documentation/master-cobigen.asciidoc b/documentation/master-cobigen.asciidoc
index 249c55cfaa..ace127cc6c 100644
--- a/documentation/master-cobigen.asciidoc
+++ b/documentation/master-cobigen.asciidoc
@@ -22,7 +22,7 @@ DISCLAIMER: All Cobigen plugins are compatible with the latest release of Devonf
 * CobiGen - XML Plug-in v7.0.0
 * CobiGen - TypeScript Plug-in v7.0.0
 * CobiGen - Property Plug-in v7.0.0
-* CobiGen - Text Merger v2.1.0
+* CobiGen - Text Merger v7.0.0
 * CobiGen - JSON Plug-in v7.0.0
 * CobiGen - HTML Plug-in v7.0.0
 * CobiGen - Open API Plug-in v7.0.0