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Re: error in "cygpath" behavior




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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