I was fixing TODOs in the testsuite to check TTY outputs.

And I realized that there is a seemingly unexpected character (presumably a space) that gets printed.

❯ /bin/ls "$(echo -e 'a\nb')" --hide-control-chars  
'a'$'\n''b'

❯ target/debug/ls "$(echo -e 'a\nb')" --hide-control-chars
 'a'$'\n''b'
^
Unexpected space

The default escaping strategy when outputing to a TTY is shell-escape. Strangely, the bug does not appear when output is not a TTY but with --quoting-style=shell-escape set, as already checked by the testsuite