[bug #60383] [feature-request] let find read files from stdin or file.

Follow-up Comment #18, bug #60383 (project findutils):

>  - cmd | find -files0-from - is potentially dangerous if cmd ends up being
aborted for instance because it reaches some resource limits. For instance it
was going to output /tmp/x/foo\0/tmp/x/bar\0 but got aborted just after it
wrote /tmp/x/foo\0/, find will end up searching / and if it was with -mtime
+30 -delete for instance, that could have disastrous consequences, maybe find
should only consider fully delimited records. 

About that, there's the same problem with xargs as in:


cmd | xargs -r0 rm -rf --


Could also end up removing the wrong things if cmd is interrupted. I verified
none of GNU, FreeBSD, NetBSD require a terminating \0, as in printf x | xargs
-r0 does output x\n just like printf 'x\0' | xargs -r0.

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