diff --git a/functions b/functions
index 20bbffe..fc455c9 100644
--- a/functions
+++ b/functions
@@ -421,16 +421,31 @@ add_full_dir() {
     if [[ -n $1 && -d $1 ]]; then
         add_dir "$1"
 
+        local ret=0
         for f in "$1"/*; do
             if [[ -L $f ]]; then
-                [[ $f = $filter ]] && add_symlink "$f" "$(readlink "$f")"
+                if [[ $f = $filter ]]; then
+                    add_symlink "$f" "$(readlink "$f")"
+                    let ret=$ret+$?
+                fi
             elif [[ -d $f ]]; then
                 add_full_dir "$f"
             elif [[ -f $f ]]; then
-                [[ $f = $filter ]] && add_file "$f"
+                if [[ $f = $filter ]]; then
+                    add_file "$f"
+                    let ret=$ret+$?
+                fi
             fi
         done
     fi
+
+    # since the trap doesn't get the return code from an explicit return statement,
+    # +simply setting a return code by this
+    if [ $ret -gt 0 ]; then
+        false
+    else
+        true
+    fi
 }
 
 add_dir() {