Dear Sam,
In message CAKaJLVuxoS0mz9pDDYqmqomsSfd83kSed=LZ261=wfUUC-Q-Xw@mail.gmail.com you wrote:
Also, I figured how to do prefixing (to display MMC errors as nested w.r.t. "Loading environment), without adding new field to gd. We can just add some new GD_LG_ and print prefix when it's installed. I'm gonna send new RFC soon. Please let me know what you think about [1].
This is IMO a totally wrong approach. We don't want to add more code (and more output) jsut to paper over inconsistent error reporting. This problem should be fixed at the root cause, i. e. we should report errors where they are detected, and only once. If all callers can rely that, in the error path, their callees which return error codes, have already printed appropriate messages, there is no need to print even more lines.
What we need is not fancy code, but consistent (and consequent) error handling.
Best regards,
Wolfgang Denk