GNU bug report logs - #65431
30.0.50; pcomplete should not quote everything in a file name

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

From: Michael Albinus <michael.albinus <at> gmx.de>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.0.50; pcomplete should not quote everything in a file name
Date: Mon, 21 Aug 2023 16:10:26 +0200

- emacs -Q -l tramp --eval "(tramp-change-syntax 'separate)" -f eshell

- Type "cd /[ssh/localho TAB"

- This expands to "cd /[ssh/localhost\]"

Due to the quoted right square bracket, the cd command fails. pcomplete
should be taught to not quote everything in a file name.

Best regards, Michael.

In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
 3.24.38, cairo version 1.17.8) of 2023-08-15 built on gandalf
Repository revision: 5c101b1adac2b4f3cc4e08a6492b406952c529f3
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12201009
System Description: Fedora Linux 38 (Workstation Edition)

Configured using:
 'configure --with-tree-sitter'

Configured features:
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Message #8 received at 65431 <at> debbugs.gnu.org (full text, mbox):

From: Jim Porter <jporterbugs <at> gmail.com>
To: Michael Albinus <michael.albinus <at> gmx.de>, 65431 <at> debbugs.gnu.org
Subject: Re: bug#65431: 30.0.50; pcomplete should not quote everything in a
 file name
Date: Mon, 21 Aug 2023 10:51:27 -0700

On 8/21/2023 7:10 AM, Michael Albinus wrote:
> 
> - emacs -Q -l tramp --eval "(tramp-change-syntax 'separate)" -f eshell
> 
> - Type "cd /[ssh/localho TAB"
> 
> - This expands to "cd /[ssh/localhost\]"
> 
> Due to the quoted right square bracket, the cd command fails. pcomplete
> should be taught to not quote everything in a file name.

I believe the problem is actually the *left* square bracket. Both square 
brackets should be quoted; otherwise, [...] gets treated as a glob. I'm 
a little surprised that the tab-completion even works here; I guess it's 
more forgiving than it should be. However, if you type "cd /\[ssh/loca 
TAB", it should work correctly.

I see a couple of options:

1) Could Pcomplete fix the unquoted "[" for us? *Should* it?

2) I see that Pcomplete fails if you try to quote the whole file name, 
like "cd '/[ssh:loca TAB". Maybe we should fix that. Then users could 
rely on quoting with ' or " to escape the special glob characters instead.

Message #11 received at 65431 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Jim Porter <jporterbugs <at> gmail.com>
Cc: 65431 <at> debbugs.gnu.org
Subject: Re: bug#65431: 30.0.50; pcomplete should not quote everything in a
 file name
Date: Mon, 21 Aug 2023 21:09:35 +0200

Jim Porter <jporterbugs <at> gmail.com> writes:

Hi Jim,

> I believe the problem is actually the *left* square bracket. Both
> square brackets should be quoted; otherwise, [...] gets treated as a
> glob. I'm a little surprised that the tab-completion even works here;
> I guess it's more forgiving than it should be. However, if you type
> "cd /\[ssh/loca TAB", it should work correctly.

Indeed, I didn't think about glob chars. Quoting them works fine.

> I see a couple of options:
>
> 1) Could Pcomplete fix the unquoted "[" for us? *Should* it?
>
> 2) I see that Pcomplete fails if you try to quote the whole file name,
> like "cd '/[ssh:loca TAB". Maybe we should fix that. Then users could
> rely on quoting with ' or " to escape the special glob characters
> instead.

Since glob chars are an eshell feature, I believe we could leave it as
it is. It is even documented in the eshell manual. If we add the square
brackets to the speacial characters of remote file names, we could close
the bug I believe. Something like

--8<---------------cut here---------------start------------->8---
This is needed especially for file names with special characters like
pipe (‘|’) or square brackets ('[' or ']'), which could be part of
remote file names.
--8<---------------cut here---------------end--------------->8---

Best regards, Michael.

Message #16 received at 65431-done <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Jim Porter <jporterbugs <at> gmail.com>
Cc: 65431-done <at> debbugs.gnu.org
Subject: Re: bug#65431: 30.0.50; pcomplete should not quote everything in a
 file name
Date: Sun, 27 Aug 2023 13:23:55 +0200

Version: 29.2

Michael Albinus <michael.albinus <at> gmx.de> writes:

Hi Jim,

> Since glob chars are an eshell feature, I believe we could leave it as
> it is. It is even documented in the eshell manual. If we add the square
> brackets to the speacial characters of remote file names, we could close
> the bug I believe. Something like
>
> This is needed especially for file names with special characters like
> pipe (‘|’) or square brackets ('[' or ']'), which could be part of
> remote file names.

No further comment, so I've pushed this to the emacs-29 branch. Closing
the bug.

Best regards, Michael.

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