コマンドに完全な文字列で行を入力する方法

スペースを含むファイルを含むディレクトリ

$ ls .
'File A'  'File B'  'File C'

$ walk .
.
./File A
./File B
./File C

ls は各スペースを新しいファイルとして解釈します。

$ ls -ld $(walk .)
ls: cannot access './File': No such file or directory
ls: cannot access 'A': No such file or directory
ls: cannot access './File': No such file or directory
ls: cannot access 'B': No such file or directory
ls: cannot access './File': No such file or directory
ls: cannot access 'C': No such file or directory
drwxr-xr-x 1 nathan users 36 Apr 27 16:56 .
[ble: exit 2]

行の周りに引用符を入れる

$ walk . | sed 's/.*/"&"/'
"."
"./File A"
"./File B"
"./File C"

動作しません

$ ls -ld $(walk . | sed 's/.*/"&"/')
ls: cannot access '"."': No such file or directory
ls: cannot access '"./File': No such file or directory
ls: cannot access 'A"': No such file or directory
ls: cannot access '"./File': No such file or directory
ls: cannot access 'B"': No such file or directory
ls: cannot access '"./File': No such file or directory
ls: cannot access 'C"': No such file or directory
[ble: exit 2]