62008RE: 'backupcopy' and Windows Vista symbolic links
- Jul 20, 2011
> -----Original Message-----The mch_is_linked() function in os_win32.c only checks if there is more than one hard link (i.e. name) for the file. It doesn't check if the file is a symbolic link. By contrast the Unix code does check if the file is a symbolic link.
> From: vim_dev@... [mailto:vim_dev@...] On
> Behalf Of Benjamin Fritz
> Sent: Thursday, July 07, 2011 8:02 AM
> To: Bram Moolenaar
> Cc: vim_dev
> Subject: Re: 'backupcopy' and Windows Vista symbolic links
> On Thu, Jul 7, 2011 at 6:34 AM, Bram Moolenaar <Bram@...>
> > Ben Fritz wrote:
> >> :help 'backupcopy' indicates that the default value of "auto" should
> >> Do The Right Thing when the file is really a symbolic link:
> >> The "auto" value is the middle way: When Vim sees that renaming
> >> file
> >> is possible without side effects (the attributes can be passed
> >> on and
> >> the file is not a link) that is used. When problems are
> >> expected, a
> >> copy will be made.
> >> I confirm that my 'backupcopy' is set to "auto", but when writing to
> >> a symbolic link in Windows Vista, the link gets destroyed.
> >> The following "fixes" the problem:
> >> " for some reason, backupcopy=auto doesn't work on Windows to
> >> keep
> >> " symbolic links. I use these in my vimfiles directory to
> >> override some
> >> " runtime files which I really edit in the vim source repository.
> >> autocmd BufWritePre ~/vimfiles/* set backupcopy=yes
> >> autocmd BufWritePost ~/vimfiles/* set backupcopy&
> >> I don't think this ought to be necessary. Am I missing something? If
> >> not, this looks like a bug. But, I cannot imagine I'm the first
> >> person to notice this.
> >> Note, I was lead to this solution (in a roundabout way) from here:
> >> http://superuser.com/questions/193872/vim-destroys-symbolic-links-und
> >> er-windows
> > There is the mch_is_linked() function which is supposed to detect
> > links on a file. I don't know why it doesn't work in this situation.
> > Are you using a recent version of Vim?
> Yes, the "Vim without Cream" install for 7.3.206. I'm not running as
> administrator, but required admin access to create the links. That doesn't affect
> anything, does it? I can try again from the admin account later if it might.
Sounds like a TODO item.
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