emacs24-common-24.3-alt8 M-x man could have a completion for man-pages. Actually, there is a completion of man-pages for M-x woman already. `man` could re-use the same code.
В текущем emacs (31.1 в Сизифе) M-x man дополняет имена man-страниц (Man-completion-table в man.el). Закрываю как FIXED.