Somebody can explain why the code below does not work as expected ?
(add-to-list 'same-window-regexps "\\`\\*Man.*\\*\\'") nor (add-to-list 'same-window-regexps "\\*Man.*\\*")
does not force display man pages with M-x man in the same window (as expected).
I am totally annoyed to switch to *Man buffers for C-x 1 when
I working in shell mode. I found it more naturally to view
man pages in the window of the shell mode (as in Un*x shell).