On Dec 12 13:46, Frank Redeker via Cygwin wrote: > Am 12/12/2022 um 1:12 PM schrieb Corinna Vinschen: > > On Dec 12 11:21, Frank Redeker via Cygwin wrote: > > > $ pwd > > > /cygdrive/s/ado > > > > > > $ realpath /cygdrive/s/ado/msadox.dll > > > /cygdrive/s/ado/msadox.dll > > > > > > $ realpath msadox.dll > > > /cygdrive/c/Program Files/Common Files/System/ado/msadox.dll > > > > > > > > > Is there any way to restore the old behavior. Since with the new behavior > > > my > > > tests no longer work. > > > > It's not easy. If we remove the new behaviour entirely, we break > > other scenarios which were broken in the old version. While it > > *seems* easy to fix your specific scenario, it will break again > > as soon as the substitution drive is used inside a native symlink. > > > > Virtual drive letters were always a problem and it doesn't get easier > > with Windows functions not allowing to specify whether one wants to > > follow symlinks or virt drives in inner path components or not. > > > > Let's consider this problem again, but I don't see a quick and easy > > solution. > > > > > > Corinna > Hello Corinna, I am willing to create my own version, tailored to my needs.
Before you do that and decouple yourself from development, I'd suggest to look for a workaround in your code, or to see if we can't patch this behaviour in the upstream code. > It would be nice if you could provide me with the commit that was used to > implement the new behavior. (I guess the change is found inside the > *git://sourceware.org/git/newlib-cygwin.git* repository) Yes, but it's a group of patches trying to fix native symlink behaviour, spread over a couple of iterations. If you're looking for an easy workaround for your case, try this: diff --git a/winsup/cygwin/path.cc b/winsup/cygwin/path.cc index e7619270a269..131c7e88278f 100644 --- a/winsup/cygwin/path.cc +++ b/winsup/cygwin/path.cc @@ -3492,8 +3492,10 @@ restart: { /* Check if the final path is an UNC path and the incoming path isn't. If so... */ - if (RtlEqualUnicodePathPrefix (&fpath, &ro_u_uncp, TRUE) - && !RtlEqualUnicodePathPrefix (&upath, &ro_u_uncp, TRUE)) + if (!RtlEqualUnicodePathPrefix (&upath, &ro_u_uncp, TRUE) + && (RtlEqualUnicodePathPrefix (&fpath, &ro_u_uncp, TRUE) + || towupper (upath.Buffer[4]) + != towupper (fpath.Buffer[4]))) { /* ...get the remote path, replace remote path with drive letter, check again. */ However, a generic solution would be preferrable, and a local patch to your scripts would be the better workaround for now. Corinna -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple