Emacs: Recursive comparison of directories

Notes on the recursive comparison of directories in Emacs.

* M-x Ediff-directories - (Recursive comparison of directories.)

File selection with regexp: .* (All files)
?  -> Shows help in the result.
h  -> Marks a comparison group (session) to hide it
=h -> Recursively marks all the equal sessions to hide them
x  -> Hides marked sessions.

Among those left unmarked will be the files that have differences.
We enter each session, and it will show us the frame split in 2 buffers.
In the Ediff-Control-Panel frame: 'p','n' -> To go forward, backward through differences
    'a' -> Passes changes from A to B.
    'b' -> Passes changes from B to A.
    'wb' -> Saves buffer B (for example)


Pending: See why it does not let you edit files "it considers" binary. It says something about there being no end of line character at the end of the file..