That is a splice on a hip ridge. Below is the brace to bearing. This is the method recommended in the old TDI Windstorm code. The splice scabs would have needed to be minimum 4 feet long and minimum 2 feet either side of the splice. That would have assumed the splice was a butt cut. If the builder used a diagonal or any cut other than a straight line, the splice scabs would have to be longer. 22 nails were required, 11 on either side and a brace to bearing was required as close to the splice as possible at 45* or less.

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The only reason some people get lost in thought is because it's unfamiliar territory.
- Paul Fix