Chris,
I don't think this is a Ruby thing, but comes from the different ways
Ruby gets the information. getpwuid gets your password entry from
the password database. Dir["/"] reads the content of the root directory.
The env, well, you know.
I'm not sure what the Mac implementation of Dir.pwd does, but it could
not be any of the above. One BSD implementation I knew had a very
clunky method: it would progressively read the entries
in .., ../.., ../../..,
etc, and match the inode numbers with ., .., ../.., etc. I suspect
that Apple
has replaced that, as most unices have, with a kernel implementation,
but I can't see it documented in /usr/share/man/man2.
https://github.com/ruby/ruby/blob/trunk/dir.c says it's implemented
using
my_getcwd, which is probably just a wrapper for getcwd (man 3 getcwd)
from the Apple standard library. Try a little C program and tell us
what it
says:
#include <unistd.h>
void main()
{
char buf[1024];
getcwd(buf, sizeof(buf));
puts(buf);
exit(0);
}
Clifford Heath.
On 16/01/2011, at 10:59 PM, Chris Berkhout wrote:
Hi All,
Today I was surprised to find that the "U" in Users is uppercase
(which I consider correct) in:
Etc.getpwuid.dir => "/Users/chrisberkhout"
Dir.entries("/") => [..., "Users", ...]
ENV['PWD'] => "/Users/chrisberkhout"
But lowercase in:
Dir.pwd => "/users/chrisberkhout"
File.expand_path('.') => "/users/chrisberkhout"
Also,
- Manually changing into the uppercase directory doesn't help.
- Deeper directories with uppercase letters seem fine.
- Other root-level directories with uppercase letters seem fine.
Anyone else run into this issue?
Cheers,
Chris
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