This was not broken on architectures such as ARM where char is unsigned.
Also, remove the first non-portable character from the output. POSIX does
not require this, and printing the first byte may yield an invalid byte
sequence with UTF-8.
PR: bin/165988
Reported by: Nicolas Rachinsky
Spaces and various other characters in pathnames are not passed through
literally by xargs in its default mode. Instead, use find . -exec ... {} +
Although the -- argument is not strictly required here, add it anyway to
avoid surprises when modifying the code to find -f -somedir ...
MFC after: 1 week
This option checks for empty pathnames and components starting with '-'.
Our -p option also checks for the latter, which remains the case.
MFC after: 1 week
