GNU bug report logs - #55261
file:// links geneated by --hyperlink

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Stephen Eglen <sje30 <at> cam.ac.uk>
To: bug-coreutils <at> gnu.org
Subject: file:// links geneated by --hyperlink
Date: Wed, 04 May 2022 14:27:11 +0100

hi,

With ls (GNU coreutils) 9.0 if I generate a hyperlink e.g.:

$ ls --hyperlink /etc/anacrontab

it generates the following filename (after removing the markup)

file://light/etc/anacrontab

where 'light' is the name of my laptop (running arch linux).
browse-url-xdg-open is my browser-function, and

$ xdg-open file://light/etc/anacrontab

generates the error:

xdg-open: file 'file://light/etc/anacrontab' does not exist

As the file URI is local, I think it might be a mistake to include the
machine name, light, unless it is a FQDN.  If I edit the URL to remove
'light' the link works as expected.

This was reported for kitty terminal last year and fixed by dropping the
hostname: https://github.com/kovidgoyal/kitty/issues/2970

However, kitty seems to be able to connect to machines remotely via
ssh  ( https://download.calibre-ebook.com/videos/kitty.mp4 ) and so
maybe having the domain name in the hyperlink is useful.   

Stephen

Message #8 received at 55261 <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: Stephen Eglen <sje30 <at> cam.ac.uk>, 55261 <at> debbugs.gnu.org
Subject: Re: bug#55261: file:// links geneated by --hyperlink
Date: Thu, 5 May 2022 14:13:31 +0100

On 04/05/2022 14:27, Stephen Eglen wrote:
> hi,
> 
> With ls (GNU coreutils) 9.0 if I generate a hyperlink e.g.:
> 
> $ ls --hyperlink /etc/anacrontab
> 
> it generates the following filename (after removing the markup)
> 
> file://light/etc/anacrontab
> 
> where 'light' is the name of my laptop (running arch linux).
> browse-url-xdg-open is my browser-function, and
> 
> $ xdg-open file://light/etc/anacrontab
> 
> generates the error:
> 
> xdg-open: file 'file://light/etc/anacrontab' does not exist
> 
> As the file URI is local, I think it might be a mistake to include the
> machine name, light, unless it is a FQDN.  If I edit the URL to remove
> 'light' the link works as expected.
> 
> This was reported for kitty terminal last year and fixed by dropping the
> hostname: https://github.com/kovidgoyal/kitty/issues/2970
> 
> However, kitty seems to be able to connect to machines remotely via
> ssh  ( https://download.calibre-ebook.com/videos/kitty.mp4 ) and so
> maybe having the domain name in the hyperlink is useful.
> 
> Stephen

The scheme we're following for this is described at:
https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda#file-uris-and-the-hostname

What is $HOSTNAME for you?
Is it perhaps a FQDN and that might work better?
I guess if we went with $HOSTNAME if set, it would allow one to override
the hostname used by ls like: HOSTNAME=blah ls --hyper

For reference, on my system `xdg-open file://blah/etc/hostname`
ignores "blah" and opens the local file, while gnome-terminal
opening such a link will refuse with:
"file" scheme with remote hostname not supported.

cheers,
Pádraig

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