> On Sep 13, 2017, at 6:22 PM, Paul Eggert <eggert@cs.ucla.edu> wrote:
> 
> Thanks for the bug report and test case. I cannot reproduce the problem on Fedora 26 x86-64.
> 
> What are the permissions on the files and directories involved? E.g., 'cd; ls -lR a test'.
> 
> I have a sneaking suspicion that the problem lies in the recent changes I made to make-directory (commit cf9891e14e48a93bca2065fdd7998f5f677786dc). Can you please try something like this:
> 
> cd
> rm -fr a test
> mkdir -p a test/{a,b,c,d}
> strace -o tr path/to/emacs -Q -batch -eval '(copy-directory "~/test" "~/a/new/directory/" t t t)'
> grep mkdir tr
> 
> Here's what I observe on Fedora:
> 
> mkdir("/home/eggert/a/new/directory/a", 0777) = -1 ENOENT (No such file or directory)
> mkdir("/home/eggert/a/new/directory", 0777) = -1 ENOENT (No such file or directory)
> mkdir("/home/eggert/a/new", 0777)       = 0
> mkdir("/home/eggert/a/new/directory", 0777) = 0
> mkdir("/home/eggert/a/new/directory/a", 0777) = 0
> mkdir("/home/eggert/a/new/directory/b", 0777) = 0
> mkdir("/home/eggert/a/new/directory/c", 0777) = 0
> mkdir("/home/eggert/a/new/directory/d", 0777) = 0
> 
> which has the desired behavior. If Darwin doesn't have strace, please use the equivalent there to trace system calls
> 
> If you don't have an strace equivalent, please try make-directory and see whether it has a similar problem:
> 
> cd
> rm -fr a
> mkdir a
> path/to/emacs -Q -batch -eval '(make-directory "a/new/directory/a" t)'
> ls -al a/new/directory/a
>