GNU bug report logs - #32215
27.0.50; Minibuffer completion fails with /~<partial-name>

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Package: emacs; Reported by: Stephen Berman <stephen.berman@HIDDEN>; dated Thu, 19 Jul 2018 17:56:01 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.

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From: Noam Postavsky <npostavs@HIDDEN>
To: Stephen Berman <stephen.berman@HIDDEN>
Subject: Re: bug#32215: 27.0.50;
 Minibuffer completion fails with /~<partial-name>
References: <87tvovhzzt.fsf@HIDDEN> <834lgv2imf.fsf@HIDDEN>
 <87pnzjhtom.fsf@HIDDEN>
Date: Thu, 19 Jul 2018 21:02:11 -0400
In-Reply-To: <87pnzjhtom.fsf@HIDDEN> (Stephen Berman's message of "Thu, 19
 Jul 2018 22:11:37 +0200")
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Stephen Berman <stephen.berman@HIDDEN> writes:

> On Thu, 19 Jul 2018 21:19:36 +0300 Eli Zaretskii <eliz@HIDDEN> wrote:
>
>>> From: Stephen Berman <stephen.berman@HIDDEN>
>>> Date: Thu, 19 Jul 2018 19:55:18 +0200
>>> 
>>> 0. emacs -Q
>>> 1. C-x d / ~ TAB
>>>    This pops up a *Completions* buffer showing directory names of all
>>>    members of (system-users), e.g. steve/
>>> 2. Continuing from step 1, when I type any of 's TAB', 'st TAB', 'ste
>>>    TAB' or 'stev TAB', Emacs responds with [No match], but 'steve TAB'
>>>    completes to steve/
>>> 
>>> The failure only happens with '/~<partial-name>', typing e.g. '~/Downl
>>> TAB' here completes to ~/Downloads/
>>
>> Doesn't happen here, FWIW.  Strange.
>
> Strange indeed, assuming you tested on GNU/Linux or another POSIX
> system, since IIUC on MS-Windows system-users returns only
> user-real-login-name (at least it does here on Emacs 25.3 under Windows
> 8).  I also tested on another GNU/Linux system I have with Emacs 24.3
> and see exactly the same behavior I described above.

I see it on both Windows and GNU/Linux.  I notice that the after typing
the first letter of the user name, the leading "/" is no longer in
shadow face, i.e., Emacs is looking for a directory starting with "~"
under the root directory.





Information forwarded to bug-gnu-emacs@HIDDEN:
bug#32215; Package emacs. Full text available.

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From: Stephen Berman <stephen.berman@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#32215: 27.0.50;
 Minibuffer completion fails with /~<partial-name>
References: <87tvovhzzt.fsf@HIDDEN> <834lgv2imf.fsf@HIDDEN>
Date: Thu, 19 Jul 2018 22:11:37 +0200
In-Reply-To: <834lgv2imf.fsf@HIDDEN> (Eli Zaretskii's message of "Thu, 19 Jul
 2018 21:19:36 +0300")
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On Thu, 19 Jul 2018 21:19:36 +0300 Eli Zaretskii <eliz@HIDDEN> wrote:

>> From: Stephen Berman <stephen.berman@HIDDEN>
>> Date: Thu, 19 Jul 2018 19:55:18 +0200
>> 
>> 0. emacs -Q
>> 1. C-x d / ~ TAB
>>    This pops up a *Completions* buffer showing directory names of all
>>    members of (system-users), e.g. steve/
>> 2. Continuing from step 1, when I type any of 's TAB', 'st TAB', 'ste
>>    TAB' or 'stev TAB', Emacs responds with [No match], but 'steve TAB'
>>    completes to steve/
>> 
>> The failure only happens with '/~<partial-name>', typing e.g. '~/Downl
>> TAB' here completes to ~/Downloads/
>
> Doesn't happen here, FWIW.  Strange.

Strange indeed, assuming you tested on GNU/Linux or another POSIX
system, since IIUC on MS-Windows system-users returns only
user-real-login-name (at least it does here on Emacs 25.3 under Windows
8).  I also tested on another GNU/Linux system I have with Emacs 24.3
and see exactly the same behavior I described above.

Steve Berman




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#32215; Package emacs. Full text available.

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Date: Thu, 19 Jul 2018 21:19:36 +0300
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From: Eli Zaretskii <eliz@HIDDEN>
To: Stephen Berman <stephen.berman@HIDDEN>
In-reply-to: <87tvovhzzt.fsf@HIDDEN> (message from Stephen Berman on Thu, 19
 Jul 2018 19:55:18 +0200)
Subject: Re: bug#32215: 27.0.50;
 Minibuffer completion fails with /~<partial-name>
References: <87tvovhzzt.fsf@HIDDEN>
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> From: Stephen Berman <stephen.berman@HIDDEN>
> Date: Thu, 19 Jul 2018 19:55:18 +0200
> 
> 0. emacs -Q
> 1. C-x d / ~ TAB
>    This pops up a *Completions* buffer showing directory names of all
>    members of (system-users), e.g. steve/
> 2. Continuing from step 1, when I type any of 's TAB', 'st TAB', 'ste
>    TAB' or 'stev TAB', Emacs responds with [No match], but 'steve TAB'
>    completes to steve/
> 
> The failure only happens with '/~<partial-name>', typing e.g. '~/Downl
> TAB' here completes to ~/Downloads/

Doesn't happen here, FWIW.  Strange.




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#32215; Package emacs. Full text available.

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From: Stephen Berman <stephen.berman@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: 27.0.50; Minibuffer completion fails with /~<partial-name>
Date: Thu, 19 Jul 2018 19:55:18 +0200
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0. emacs -Q
1. C-x d / ~ TAB
   This pops up a *Completions* buffer showing directory names of all
   members of (system-users), e.g. steve/
2. Continuing from step 1, when I type any of 's TAB', 'st TAB', 'ste
   TAB' or 'stev TAB', Emacs responds with [No match], but 'steve TAB'
   completes to steve/

The failure only happens with '/~<partial-name>', typing e.g. '~/Downl
TAB' here completes to ~/Downloads/

I tried debugging but only got as far as completion--some; when stepping
through that after '/~stev TAB' *Messages* shows this:

  Result: (closure ((metadata metadata (category . file) (completion--unquote-requote . t)) (point . 6) (pred . file-exists-p) (table . completion-file-name-table) (string . "/~stev") (n . 1) t) (style) (funcall (nth n (assq style completion-styles-alist)) string table pred point))
   [2 times]
  Result: (substring basic partial-completion emacs22)
  
  Result: (substring basic partial-completion emacs22)
  
  Result: substring
  
  Result: nil

In contrast, with '/~steve TAB':

  Result: (closure ((metadata metadata (category . file) (completion--unquote-requote . t)) (point . 6) (pred . file-exists-p) (table . completion-file-name-table) (string . "~steve") (n . 1) t) (style) (funcall (nth n (assq style completion-styles-alist)) string table pred point))
   [2 times]
  Result: (substring basic partial-completion emacs22)
  
  Result: (substring basic partial-completion emacs22)
  
  Result: substring
  
  Result: ("~steve/" . 7)


In GNU Emacs 27.0.50 (build 6, x86_64-pc-linux-gnu, GTK+ Version 3.22.28)
 of 2018-07-18 built on rosalinde
Repository revision: 04a32fa60bead4359bc9353af67f26958c795593
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description: Linux From Scratch

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Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix




Acknowledgement sent to Stephen Berman <stephen.berman@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs@HIDDEN. Full text available.
Report forwarded to bug-gnu-emacs@HIDDEN:
bug#32215; Package emacs. Full text available.
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