Re: mkdir -p and POSIX

[Ralf Wildenhues]

Hello Eric,

* Eric Blake wrote on Thu, Oct 08, 2009 at 06:44:41PM CEST:
> The Austin Group made their recommendation about mkdir -p today:
[...]

> This also means that build-aux/mkinstalldirs and build-aux/install-sh
> are also impacted.

Why?  I don't see anything that defines the behavior of mkinstalldirs or
install-sh wrt. dangling symlinks.

> And there, since we can't guarantee whether the
> system mkdir(1) gracefully handles trailing slashes, it could get
> rather difficult to guarantee creating a directory tree through a
> dangling symlink using portable shell code.

Well, I'd suggest to not use dangling symlinks in your build then.
Symlinks themselves aren't even portable, and Autoconf doesn't even
recommend any way to create a dangling such.

What am I missing?  Thanks for enlightening me.

Cheers,
Ralf