Update of bug #54860 (project findutils):
Severity: 3 - Normal => 1 - Wish
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Follow-up Comment #7:
Ha, it's the *directory order* which plays into the game!
That means, 'dir-2/another' has been created *later than* 'dir-2/dir-4':
mkdir -pv dir dir-2 dir-3/dir-{4,5} \
&& touch dir/{bar,one}.c dir-2/file dir-2/foo.c dir-3/dir-4/file
dir-3/dir-5/file dir-3/file file \
&& mkdir dir-2/dir-4 dir-2/dir-5 \
&& touch dir-2/another.c \
&& touch dir-2/dir-4/file dir-2/dir-5/file
The underlying system call 'getdents' returns the directory entries of
'dir-2'
un-ordered, i.e., not sorted alphabetically but usually in the order of
creation:
getdents(6, [{d_ino=90672, d_off=1, d_reclen=24, d_name=".", d_type=DT_DIR},
{d_ino=91825, d_off=2, d_reclen=24, d_name="..", d_type=DT_DIR},
{d_ino=92462, d_off=3, d_reclen=32, d_name="another.c",
d_type=DT_REG},
{d_ino=90677, d_off=4, d_reclen=32, d_name="dir-5",
d_type=DT_DIR},
{d_ino=90676, d_off=5, d_reclen=32, d_name="dir-4",
d_type=DT_DIR},
{d_ino=91934, d_off=6, d_reclen=32, d_name="foo.c",
d_type=DT_REG},
{d_ino=91933, d_off=7, d_reclen=24, d_name="file",
d_type=DT_REG}], 32768) = 200
_find_ will process all entries exactly in that order, and between
'another.c'
and 'foo.c' it processes the subdirectories dir-5 and dir-4. As it has
changed directory in between (internally), 'foo.c' is processed in its
own -execdir run.
There is also a comment on this in the code
<https://git.sv.gnu.org/cgit/findutils.git/tree/find/ftsfind.c?id=7741d79fa3f5#n563>:
/* If we changed level, perform any outstanding
* execdirs. If we see a sequence of directory entries
* like this: fffdfffdfff, we could build a command line
* of 9 files, but this simple-minded implementation
* builds a command line for only 3 files at a time
* (since fts descends into the directories).
*/
After all, _find_ works as intended (by the implementation).
I'm therefore marking the severity as 'wishlist'.
Of course, we can continue the discussion, and maybe someone (even me?)
may propose a patch to improve things.
The problem in that is that the whole point about using gnulib's FTS module
is that we don't have to care whether a directory has 2 entries or
4 million; in the latter case (or even larger directories) sorting is not
possible anymore.
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