GNU bug report logs - #23743
24.5; Opening output file: invalid argument, .../foo-<-4-n.el

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Message #8 received at 23743 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Drew Adams <drew.adams <at> oracle.com>
Cc: 23743 <at> debbugs.gnu.org
Subject: Re: bug#23743: 24.5;
 Opening output file: invalid argument, .../foo-<-4-n.el
Date: Fri, 10 Jun 2016 22:04:23 +0300

> Date: Fri, 10 Jun 2016 10:35:54 -0700 (PDT)
> From: Drew Adams <drew.adams <at> oracle.com>
> 
> emacs -Q
> 
> C-x C-f foo-<-4-n.el
> 
> Type some text in that file buffer.
> 
> C-x C-s  ; try to save it.
> 
> Saving file d:/usr/drew/drews-lisp-20/foo-<-4-n.el...
> basic-save-buffer-2: Opening output file: invalid argument, d:/.../foo-<-4-n.el
> 
> Apparently it doesn't like `<' in a file name?

Yes, Windows doesn't allow that.

> If so, and if that is "normal", then the user should get a much
> better error message than this.

That's the error that comes from the filesystem, Emacs doesn't know
any better.

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