Re: error in "cygpath" behavior

[Thomas Wolff <towo at towo dot net>]

Am 31.08.2018 um 22:05 schrieb Eric Blake:
> On 08/31/2018 02:48 PM, cyg Simple wrote:
>
> > Don't forget the possibility that '..' points to a symlink which Windows
> > will not understand.
> >
> > $ mkdir -p /foo/baz
> > $ ln -s /foo /bar
> > $ cd /bar/baz
> > $ cygpath -w ..
>
> Except .. never points to a symlink.  It always points to the physical 
> directory that contains the current directory (that is, /foo, not 
> /bar).  The shell can maintain a notion of a logical current directory 
> (based on whether you use 'set -P' for physical or 'set +P' for 
> logical; where bash defaults to +P), and in that mode, 'cd ..' behaves 
> logically (acting as though you are now in /bar, rather than actually 
> changing you to /foo).  But that still doesn't change the fact that 
> '..' in file name resolution never resolves to a symlink, because the 
> shell is merely rewriting your ".." to avoid passing it on to the 
> syscalls, rather than the syscalls actually knowing about logical mode.
As a side-note, this is also the reason that you may be facing apparent 
inconsistency with path name completion,
like `ls ../[TAB]` suggesting you files and directories that do not 
exist once you run the command.
This is not cygwin-specific.

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