https://bugs.exim.org/show_bug.cgi?id=2916
--- Comment #8 from Martin Kealey <from-exim-bugzilla@???> ---
I take your point about filter=nodots.
It's worth noting that POSIX says that the getdents syscall may or may not
return the "." and ".." entries, so the old code would not have reliably
returned them.
So I would suggest that the onus should be reversed: the "." and ".." entries
should be excluded by default, and only accepted if "filter=allowdots" is
specified (or "filter=dir", if we insist on backwards compatibility).
That is, when you don't filter by type, the values "." and ".." should be
hidden, as they currently are with "filter=subdir".
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