checker: Add unit test for REP end pattern panic

Author: the-mikedavis

src/checker.rs

@@ -2738,4 +2738,39 @@ mod test {
 
         assert!(dict.check("macroconcierto"));
     }
+
+    #[test]
+    fn rep_panic() {
+        // <https://github.com/blopker/codebook/issues/72>
+        let aff = r#"
+        # At least this many letters in each word within a compound:
+        COMPOUNDMIN 1
+        # Don't allow autogenerated compounds that are very similar
+        # to some word in the dictionary:
+        CHECKCOMPOUNDREP
+        # For suffixes used to create first part of a compound
+        COMPOUNDPERMITFLAG W
+        # May appear first in compound words:
+        COMPOUNDBEGIN X
+        # May be middle elements in compound words:
+        COMPOUNDMIDDLE U
+        # May appear last in compound words:
+        COMPOUNDEND Y
+
+        REP 1
+        REP ochmed$ _och_med
+
+        SFX  f  N  2
+        SFX  f  a  s/WUZ  a
+        SFX  f  0  s/WUZ  [^a]
+
+        "#;
+        let dic = r#"3
+        träd/ABDXY
+        algoritm/ADHTXY
+        sökning/ADfGvY
+        "#;
+        let dict = Dictionary::new(aff, dic).unwrap();
+        assert!(dict.check("trädsökningsalgoritm"));
+    }
 }