updater: improve update-exclusion

updater

@@ -81,8 +81,6 @@ echo "updatable: $updatable"
 
 #if check-all succeeded to download the repo to the update folder
 if [ -d "${DIRECTORY}/update" ];then
-  PREIFS="$IFS"
-  IFS="|"
   
   #mainfiles="$(echo -e "$(ls -Rp "${DIRECTORY}/update/pi-apps")\n$(ls -Rp "${DIRECTORY}")" | grep -v '/' | sort | uniq | tr '\n' '|')"
   
@@ -94,18 +92,18 @@ if [ -d "${DIRECTORY}/update" ];then
   cd "${DIRECTORY}"
   localfiles="$(find . -type f | cut -c 3- | grep -v '.git/' | grep -v 'apps/' | grep -v 'data/' | grep -v 'xlunch/')"
   
-  mergedfiles="$(echo -e "${localfiles}\n${updatefiles}" | sort | uniq | tr '\n' '|')"
+  mergedfiles="$(echo -e "${localfiles}\n${updatefiles}" | sort | uniq)"
   
   #exclude files mentioned in data/update-exclusion file
-  PREIFS="$IFS"
   IFS=$'\n'                                   #exclude commented lines
-  for file in $(cat data/update-exclusion | grep "^[^#;]")
+  for file in $(cat "${DIRECTORY}/data/update-exclusion" | grep "^[^#;]")
   do
     mergedfiles="$(echo "$mergedfiles" | grep -v "$file")"
-    echo "Excluding $file from the mergedlist."
+    echo "Excluding '$file' from the mergedlist."
   done
-  IFS="$PREIFS" # back to IFS='|'
+  IFS="|" # back to IFS='|'
   
+  mergedfiles="$(echo "$mergedfiles" | tr '\n' '|')"
   for file in $mergedfiles
   do
     newhash=$(cat "${DIRECTORY}/update/pi-apps/${file}" 2>/dev/null | sha1sum | awk '{print $1}' | sha1sum | awk '{print $1}')