[Bug 265750] ldd(1) -f formatting polluted in 14-CURRENT, POLA violation

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=265750

            Bug ID: 265750
           Summary: ldd(1) -f formatting polluted in 14-CURRENT, POLA
                    violation
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: editor@callfortesting.org

FreeBSD 13.X and previous provides highly-parsable ldd -f output such as:

ldd -f '%p\n' `which ls`
/lib/libutil.so.9
/lib/libncursesw.so.9
/lib/libc.so.7

Such output can easily be put into a shell loop or similar for processing.


On 14-CURRENT, 'ldd -f' adds additional, unactionable lines, limiting the use
of formatting without additional line removal, which would require an OS
version check because of the different behavior:

ldd -f '%p\n' `which ls`
/lib/libutil.so.9
/lib/libtinfow.so.9
/lib/libc.so.7
[preloaded]
        [vdso] (0x2952532395d0)

ldd -f '%p\n' `which which`
/lib/libc.so.7
[preloaded]
        [vdso] (0x1c674fa475d0)

I suggest that this additional information be removed from 14-CURRENT 'ldd -f'
to restore the 13.X and previous behavior.

Thank you!

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