> All still aliased to /
>
> Why it has this useless feature I have no idea.
As some have correctly inferred, this is not a distro specific thing, it's the
behaviour of the kernel.
Useless? Hardly. For example in Makefiles you can do things like
PREFIX= /test/ # to force directory interpretation
LIBSUF= /lib
LIBDIR= $(PREFIX)$(LIBSUF)
and it will work correctly whether or not PREFIX is defined. When making
pathname strings, it's nice not to have to check that you have exactly one / as
a separator between components. Besides it's a consistent interpretation. A long
time ago in Unix, the empty string also stood for the current directory, so //
would mean /./
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