Add ver.di (Germn trade union) to abbreviations

Thanks @notesjor

Change-Id: Iede4c5715fd1ac698533aef98b8ff627e0ba0b05
diff --git a/src/main/jpc/jflex/de/ids_mannheim/korap/tokenizer/DerekoDfaTokenizer.jflex b/src/main/jpc/jflex/de/ids_mannheim/korap/tokenizer/DerekoDfaTokenizer.jflex
index 342c668..5582821 100644
--- a/src/main/jpc/jflex/de/ids_mannheim/korap/tokenizer/DerekoDfaTokenizer.jflex
+++ b/src/main/jpc/jflex/de/ids_mannheim/korap/tokenizer/DerekoDfaTokenizer.jflex
@@ -783,6 +783,7 @@
 {PLUSAMPERSAND}                                                 {return currentToken();}
 {SEABBR}\.                                                      {return currentToken();}
 {SEABBRHYPH}\.                                                  {return currentToken();}
+ver\.di                                                         {return currentToken();}
 {PRAGMA}                                                        {return currentToken();}
 {FNAME}                                                         {return currentToken();}
 
diff --git a/src/test/java/de/ids_mannheim/korap/tokenizer/TokenizerTest.java b/src/test/java/de/ids_mannheim/korap/tokenizer/TokenizerTest.java
index 779bfdd..e50e2e1 100644
--- a/src/test/java/de/ids_mannheim/korap/tokenizer/TokenizerTest.java
+++ b/src/test/java/de/ids_mannheim/korap/tokenizer/TokenizerTest.java
@@ -1179,5 +1179,22 @@
         assertEquals("Kosovo-Albaner", tokens[0]);
         assertEquals(1, tokens.length);
     }
+
+    // Regression test for ver.di (German trade union)
+    @Test
+    public void testVerdiAbbreviation() {
+        DerekoDfaTokenizer_de tok = new DerekoDfaTokenizer_de();
+        
+        String[] tokens = tok.tokenize("Die Gewerkschaft ver.di fordert mehr Lohn.");
+        assertEquals("Die", tokens[0]);
+        assertEquals("Gewerkschaft", tokens[1]);
+        assertEquals("ver.di", tokens[2]);
+        assertEquals("fordert", tokens[3]);
+        assertEquals("mehr", tokens[4]);
+        assertEquals("Lohn", tokens[5]);
+        assertEquals(".", tokens[6]);
+        assertEquals(7, tokens.length);
+    }
 }
 
+