Not exactly what was asked for...
What I requested was one or two options which would read something like;
- Keep last x days of error log
- Limit error log to x KB/MB/GB
What you provided works and I can live with, but resetting the error log completely clears it. I would much prefer to save X number of days, so there's a little bit of history remaining.
As I said, what you've done is fine and better than what existed previously.
Thanks.