On , I learnt ...

About Vim’s semi-colon search offset

A search with / or ? can include an additional offset to position the cursor after jumping to the search match. From the docs:

pattern			cursor position
/test/+1		one line below "test", in column 1
/test/e			on the last t of "test"
/test/s+2		on the 's' of "test"
/test/b-3		three characters before "test"

A special offset is ; which lets you position the cursor by doing a second search (normally within the same line as the original match). E.g.

/test_.*_errors/;/errors

which will position the cursor on the errors part of each search match.

Useful for repeating common changes in a buffer using n.n.n. etc.