what is happening here, for all hails sake

bin/find_changes.sh

@@ -1,11 +1,16 @@
 #!/bin/bash
-CHANGES=()
+declare -A CH
+
+
+
+CH=()
 
-git diff-tree --no-commit-id --name-only HEAD -r | \
 while read line; do
-    CHANGES+=$(dirname ${line})
-done
-echo ${CHANGES}
+    WHAT=$(dirname ${line})
+    echo "LIN: ${line}    WHAT: ${WHAT}"
+   echo $CH
+done < <(git diff-tree --no-commit-id --name-only HEAD -r)
+echo ${CH}
 
-UNIQ=$(echo ${CHANGES} |sort |uniq)
+UNIQ=$(echo ${CH} |sort |uniq)
 echo ${UNIQ}