support O_APPEND in Unix.openfile for Win32

[vicuna]

Original bug ID: 4431
Reporter: @xavierleroy
Status: acknowledged (set by @xavierleroy on 2017-02-16T09:56:14Z)
Resolution: open
Priority: normal
Severity: feature
Version: 3.10.0
Target version: later
Category: otherlibs
Tags: junior_job
Related to: #4397
Monitored by: @dbuenzli

Bug description

The O_APPEND flag is currently ignored by the Win32 implementation of Unix.openfile. The MSDN page for CreateFile suggests a cheap way to implement the O_APPEND behavior. Consider updating otherlibs/win32unix/open.c accordingly.

[vicuna]

Comment author: @xavierleroy

I'm "un-assigning" this PR from myself as I've been sleeping on it for too long. Anyone who cares enough about this tiny feature is welcome to handle it: it looks pretty easy.

[github-actions]

This issue has been open one year with no activity. Consequently, it is being marked with the "stale" label. What this means is that the issue will be automatically closed in 30 days unless more comments are added or the "stale" label is removed. Comments that provide new information on the issue are especially welcome: is it still reproducible? did it appear in other contexts? how critical is it? etc.

[xavierleroy]

13 years later it is safe to say that nobody cares about this little feature. So, as the original reporter, I'm closing it.