\| is an incompatible GNU extension to BREs. This corrupts formatting of the elinkskeys(5) man page on any system where sed is not GNU sed (e.g. the BSDs). Use ERE syntax instead.
Quote character keybindings to workaround unescaped (resulting to
invisible) dots in elinkskeys(5).
(cherry picked from commit 3de420d72f480f01172d052d9bf9812157cf23f3)