Eli Zaretskii <
eliz@gnu.org> schrieb am Mo., 14. Aug. 2017 um 17:34 Uhr:
> From: Paul Eggert <eggert@cs.ucla.edu>
> Cc: Eli Zaretskii <eliz@gnu.org>, 27986@debbugs.gnu.org
> Date: Sun, 13 Aug 2017 16:48:59 -0700
>
> Getting back to Philipp's original bug report, Apple documentation says macOS
> has a facility like the Linux renameat2 system call (i.e., it's like 'renameat'
> except it can be told to fail if the destination already exists). Attached is a
> proposed patch to use this facility, which means that the case-insensitivity
> test would no longer need to be done in macOS. If there's some way to implement
> renameat_noreplace on MS-Windows we could get rid of the case-insensitivity test
> there too.
There's nothing easier than implementing renameat_noreplace on
MS-Windows, since the underlying system call does that by default, and
it's emulating the Posix behavior that requires complications.
You might be able to eliminate these complications by calling MoveFileExW with MOVEFILE_REPLACE_EXISTING.