Improve rename-file port to macOS

* src/fileio.c (Frename_file): On macOS, renameat_noreplace can
fail with errno == ENOTSUP on file systems where it is not
supported, according to the Apple documentation.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/fileio.c b/src/fileio.c
index 9f6de5b6ca7..e557483ac4a 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -2297,7 +2297,7 @@ This is what happens in interactive use with M-x.  */)
       rename_errno = errno;
       switch (rename_errno)
         {
-        case EEXIST: case EINVAL: case ENOSYS:
+        case EEXIST: case EINVAL: case ENOSYS: case ENOTSUP:
           barf_or_query_if_file_exists (newname, rename_errno == EEXIST,
                                         "rename to it",
                                         INTEGERP (ok_if_already_exists),