I mean the second hunk, the s/his/per/ in lines 380 and 382 of doc/maintain.texi. Apologies if it's a kind of English that I don't understand.
Ah. It's not a mistake, or rather, one might say, it's an intentional mistake. rms explains in the Preface node, e.g., http://www.gnu.org/prep/maintain/html_node/Preface.html Personally I think these novel pronounds are a bad idea; even as a native English speaker, I find myself confused by them. For non-native speakers, I expect it's worse. It would not be hard to rewrite the document to be gender-neutral in other ways. However, I proposed doing this to rms, and he rejected the idea. So it goes sometimes. Cheers, karl