[debbugs-tracker] bug#6273: closed (dired-current-directory with `t' arg returns empty string in top-level mount-point "/")

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Your message dated Fri, 08 Jan 2016 12:43:50 +0200
with message-id <address@hidden>
and subject line Re: bug#6273: dired-current-directory with `t' arg returns 
empty string in top-level mount-point "/"
has caused the debbugs.gnu.org bug report #6273,
regarding dired-current-directory with `t' arg returns empty string in  
top-level mount-point "/"
to be marked as done.

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6273: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=6273
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> --- Begin Message ---
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> Subject: 
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> dired-current-directory with `t' arg returns empty string in 	top-level mount-point "/"
>
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> Date: 
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> Tue, 25 May 2010 17:18:40 -0400
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>
>
> (dired-current-directory t) returns the empty string
> when in a `top-level' mount point, e.g. "/"
>
> (progn
>   (dired "/" )
>   (dired-current-directory t))
>  => ""
>
> ,---- (documentation 'dired-current-directory)
> | {...}
> | This returns a string with trailing slash, like `default-directory'.
> | Optional argument means return a file name relative to `default-directory'.
> `----
>
> In the case at hand it does not return a string with trailing slash...
> and appears in contrast to the return value of following forms:
>
> (progn
>   (dired "/")
>   (file-relative-name default-directory))
>  => "./"
>
> (progn
>   (dired "/")
>   (file-relative-name (dired-default-directory)))
>  => "./"
>
> which are likewise at odds with each of the following:
>
> (progn
>   (dired "/")
>   (dired-make-relative (dired-default-directory)))
>   => ""
>
> (progn
>   (dired "/")
>   (dired-make-relative (dired-make-absolute default-directory)))
>  => "/"
>
> So which is the correct return value? Relatively speaking...
>
> GNU Emacs 23.2.1 (i686-pc-linux-gnu, GTK+ Version 2.20.0) of 2010-05-10
>
> --
> /s_P\
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#6273: dired-current-directory with `t' arg returns empty string in top-level mount-point "/"
>
>
>
>
> Date: 
>
> Fri, 08 Jan 2016 12:43:50 +0200
>
>
>
>
> > From: Alexis <address@hidden>
> > Date: Wed, 06 Jan 2016 23:48:09 +1100
> > Cc: address@hidden
> > 
> > Since the documentation for `dired-current-directory' states:
> > 
> > "Optional argument means return a file name relative to
> > `default-directory'"
> > 
> > and there is no file name to return in the case that
> > `dired-current-directory' and `default-directory' are the same,
> > an empty string seems to be a reasonable return value here.
>
> Actually, the value returned by dired-current-directory is always an
> empty string of default-directory is the same one as the directory
> where the file on the current line lives.  IOW, the issue is not
> limited to "/" as the current directory of the Dired buffer.
>
> I think this is just something that needs to be clarified in the doc
> string, so I just pushed such a change, and I'm marking this bug done.
>
> Thanks for looking into it.
>
>
> --- End Message ---