how is realpathSync supposed to work?

[Cliffano Subagio]

Hi,

I was testing an app that uses realpathSync, and I found out that it returns different value compared to realpath itself on certain path settings.

1. mkdir -p /a/b/c/d/e/f/g/h/i/j
2. touch /a/b/c/d/e/f/g/h/i/j/x.txt
3. cd /a/b
4. ln -s /a/b/c/d/e/f current

I then ran the following code:
================
var fs = require('fs'),
     sys = require('sys');
sys.puts(fs.realpathSync('/a/b/current/g/h/i/j/x.txt'));
================

I got the result
    /a/b/c/d/e/f

Whereas running
    realpath /a/b/current/g/h/i/j/x.txt
gave me
    /a/b/c/d/e/f/g/h/i/j/x.txt

However, when I redid the same thing (steps 1, 2, 3) but with a different way of creating the symlink on step 4
4. ln -s c/d/e/f current

I got identical result from both the node code and realpath command, the result was
    /a/b/c/d/e/f/g/h/i/j/x.txt

Could this be a bug with node realpathSync? or did I misunderstand how realpathSync is supposed to work?

Tested on Ubuntu Lucid with node 0.2.0 .

Cheers,
Cliff.

[Isaac Schlueter]

Can you do this test with the code on ry/master? I suspect that this
commit might fix your problem:
http://github.com/ry/node/commit/ba0c32e2e1aa873728a54df12a3785091f475143

--i

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[Cliffano Subagio]

Retested with code on ry/master, still the same problem.

[Isaac Schlueter]

Aha. I see it. Fixed by
http://github.com/isaacs/node/commit/2e8ae753d2d366ab4829b34275283e182daa76fc

--i

[r...@tinyclouds.org]

On Tue, Sep 14, 2010 at 9:28 AM, Isaac Schlueter <i...@izs.me> wrote:
> Aha.  I see it.  Fixed by
> http://github.com/isaacs/node/commit/2e8ae753d2d366ab4829b34275283e182daa76fc
>

Thanks isaac. committed in 686d9f9cc6688b4febf8ebc4655c1d1bc3515829.