return *len ? s : NULL;
}
+const char *
+strtok_len_c (const char *s, const char *delim, size_t *len)
+{
+ /* strtok_len is already const-safe, but we can't express both
+ * versions in the C type system. */
+ return strtok_len ((char*)s, delim, len);
+}
+
char *
sanitize_string (const void *ctx, const char *str)
{