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9.4.4.1 Include Additional Directories

dired-maybe-insert-subdir

‘i’

insert this subdirectory into the same dired buffer (like ls -lR)

‘C-u i’

edit the ls switches; add ‘R’ to the switches to expand the whole tree starting at this subdirectory

(emacs)Subdir Switches

for more details

dired-hide-subdir

‘$’ — hide or unhide the current subdirectory and move to next directory

‘M-$’

(un)hide all directories

dired-reset-subdir-switches

reset all subdirectory switches to the default