fallback for unknown codenames

Author: silentJET85

deb-get

@@ -489,7 +489,7 @@ function validate_deb() {
         if [ -n "${MIN_CODENAMES}" ]; then
             local OTHER_CODENAMES="$(grep -E -o "[a-z]+(\s|$)" <<< "${CODENAMES_SUPPORTED}")"
             OTHER_CODENAMES="${OTHER_CODENAMES//$'\n'}"
-            CODENAMES_SUPPORTED="$(grep -E -o "(${MIN_CODENAMES})[^,]*" <<< "${DEBIAN_CODENAMES},${UBUNTU_CODENAMES},")"
+            CODENAMES_SUPPORTED="$(grep -E -o "(${MIN_CODENAMES})[^,]*" <<< "${DEBIAN_CODENAMES},${UBUNTU_CODENAMES}," || echo "${CODENAMES_SUPPORTED//+/}")"
             CODENAMES_SUPPORTED="${CODENAMES_SUPPORTED/$'\n'/ }"; CODENAMES_SUPPORTED="${CODENAMES_SUPPORTED% }"
             for other_codename in ${OTHER_CODENAMES}; do
                 if ! [[ "${CODENAMES_SUPPORTED}" =~ "${other_codename}" ]]; then