+ char * log_prefix = "LOG ";
+ if (!strncmp(msg, log_prefix, strlen(log_prefix)))
+ {
+ ret = 1;
+ char * log_msg = msg + strlen(log_prefix);
+ int old_size = 0;
+ if (world.log)
+ {
+ old_size = strlen(world.log);
+ }
+ int new_size = strlen(log_msg);
+ char * new_log = try_malloc(old_size + 1 + new_size + 1, __func__);
+ memcpy(new_log, world.log, old_size);
+ int test = sprintf(new_log + old_size, "\n%s", log_msg);
+ exit_trouble(test < 0, __func__, "sprintf");
+ free(world.log);
+ world.log = new_log;
+ }
+ free(msg);