bug#865: 23.0.60; The directory is unsafe today

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: 865@emacsbugs.donarmstrong.com,  jasonr@gnu.org,  
> emacs-pretest-bug@gnu.org
> Date: Fri, 05 Sep 2008 17:36:40 -0400
> 
> But I'd argue that having the umask (aka default-file-modes) set to
> #o700 could be used as a tell-tale sign, so it sounds to me like it
> might be doable by adding w32 C code without any C-level changes.

So you are saying we should assume that when umask has its two lower
mode bits set to zero, the intent is to create a private file
accessible only by the user who runs Emacs?  I don't like such
assumptions, but if I'm the only one, so be it.