Check for empty string

start

@@ -101,7 +101,11 @@ function gpgSearch() {
       if [ $? -eq 0 ]; then
         export FFP=$(gpg -k "$(cat $TMP)" | head -n 2 | tail -n 1 | awk '{print $1}' | sed 's/.\{4\}/& /g;s/^\(.*\) $/\1/g')
         gpg --batch --delete-key "$FFP"
-        return 0
+        if [ "$FFP" = "" ]; then
+          gpgSearch
+        else
+          return 0
+        fi
       else
         gpgSearch
       fi

start_dialog

@@ -135,7 +135,11 @@ function gpgSearch() {
       if [ $? -eq 0 ]; then
         export FFP=$(gpg -k "$(cat $TMP)" | head -n 2 | tail -n 1 | awk '{print $1}' | sed 's/.\{4\}/& /g;s/^\(.*\) $/\1/g')
         gpg --batch --delete-key "$FFP"
-        return 0
+        if [ "$FFP" = "" ]; then
+          gpgSearch
+        else
+          return 0
+        fi
       else
         gpgSearch
       fi