Many thanks! How on earth did you spot that?!?

I have updated the PR to make the same change to the other copies of the documentation. The "primary file" ispcre2test.1, and the others are updated automatically from there.

Haha, I spotted it because I googled error number -47during some research and that page was the first one I could find. It made no sense to me that it was a no-memory error so had to go digging.