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

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Package: emacs; Severity: minor; 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: 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>
 <87pnzjhtom.fsf@HIDDEN> <87bmb27m98.fsf@HIDDEN>
 <87va9ajol1.fsf@HIDDEN>
 <CAM-tV--ZETHpZNE54sRGG9pASQvo1Yiy-KVwcmj=MxbcNU292A@HIDDEN>
 <87h8kuj81s.fsf@HIDDEN> <8336we0xdf.fsf@HIDDEN>
 <87d0vij66g.fsf@HIDDEN> <83y3e5zuss.fsf@HIDDEN>
 <878t65ke5v.fsf@HIDDEN> <83sh4dzq4m.fsf@HIDDEN>
Date: Fri, 20 Jul 2018 23:46:58 +0200
In-Reply-To: <83sh4dzq4m.fsf@HIDDEN> (Eli Zaretskii's message of "Fri, 20 Jul
 2018 22:03:21 +0300")
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On Fri, 20 Jul 2018 22:03:21 +0300 Eli Zaretskii <eliz@HIDDEN> wrote:

>> From: Stephen Berman <stephen.berman@HIDDEN>
>> Cc: npostavs@HIDDEN,  32215 <at> debbugs.gnu.org
>> Date: Fri, 20 Jul 2018 19:30:52 +0200
>>=20
>> > Try a subdirectory of your home directory.
>>=20
>> Perhaps I'm misunderstanding what you're suggesting, but with the
>> following I still get the same behavior:
>>=20
>> 0. emacs -Q
>> 1. M-x cd RET ~/Downloads/ RET
>> 2. C-x d /~s TAB
>>=20
>> results in this minibuffer display:
>>=20
>> Dired (directory): ~/Downloads//~s=E2=96=88[No match]
>
> The original recipe was different:
>
>   0. emacs -Q
>   1. M-x cd RET ~/Downloads/ RET
>   2. C-x d / ~ TAB s TAB

I did not give, nor have I seen, this recipe in this bug thread.  But I
see now that the recipe of my OP (which lacked the above step 1) could
be understood as consistent with the above.  There is indeed a
difference between

  Dired (directory): ~/~ TAB

or

  Dired (directory): ~/Downloads/~ TAB

on the one hand, and

  Dired (directory): ~//~ TAB

or

  Dired (directory): ~/Downloads//~ TAB

on the other.  But the bug I meant to report is about this:

  Dired (directory): ~//~s TAB

or

  Dired (directory): ~/Downloads//~s TAB

which both get '[No match]', whereas

  Dired (directory): ~//~steve TAB

or

  Dired (directory): ~/Downloads//~steve TAB

both complete, to '~//steve/' and '~/Downloads//steve/', respectively.=20=20

One thing I just noticed: in the latter two case, when I type '/', that
changes the face on '~/' or '~/Downloads/' to shadow, and when I then
type '~', the changes the face of the just typed '/' to shadow, but when
I continue and type 's', then the face of the last '/' returns to
default (but the face of the preceding characters remains shadow), and
stays like that when I add 't', 'e', 'v'; but as soon as I add 'e'
(which make TAB complete successfully), the face of the last '/' changes
back to shadow (and '~steve' keeps default face).

Steve Berman

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

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Date: Fri, 20 Jul 2018 22:03:21 +0300
Message-Id: <83sh4dzq4m.fsf@HIDDEN>
From: Eli Zaretskii <eliz@HIDDEN>
To: Stephen Berman <stephen.berman@HIDDEN>
In-reply-to: <878t65ke5v.fsf@HIDDEN> (message from Stephen Berman on Fri, 20
 Jul 2018 19:30:52 +0200)
Subject: Re: bug#32215: 27.0.50;
 Minibuffer completion fails with /~<partial-name>
References: <87tvovhzzt.fsf@HIDDEN> <834lgv2imf.fsf@HIDDEN>
 <87pnzjhtom.fsf@HIDDEN> <87bmb27m98.fsf@HIDDEN>
 <87va9ajol1.fsf@HIDDEN>
 <CAM-tV--ZETHpZNE54sRGG9pASQvo1Yiy-KVwcmj=MxbcNU292A@HIDDEN>
 <87h8kuj81s.fsf@HIDDEN> <8336we0xdf.fsf@HIDDEN>
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> From: Stephen Berman <stephen.berman@HIDDEN>
> Cc: npostavs@HIDDEN,  32215 <at> debbugs.gnu.org
> Date: Fri, 20 Jul 2018 19:30:52 +0200
> 
> > Try a subdirectory of your home directory.
> 
> Perhaps I'm misunderstanding what you're suggesting, but with the
> following I still get the same behavior:
> 
> 0. emacs -Q
> 1. M-x cd RET ~/Downloads/ RET
> 2. C-x d /~s TAB
> 
> results in this minibuffer display:
> 
> Dired (directory): ~/Downloads//~s█[No match]

The original recipe was different:

  0. emacs -Q
  1. M-x cd RET ~/Downloads/ RET
  2. C-x d / ~ TAB s TAB

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

Message received at 32215 <at> debbugs.gnu.org:

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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>
 <87pnzjhtom.fsf@HIDDEN> <87bmb27m98.fsf@HIDDEN>
 <87va9ajol1.fsf@HIDDEN>
 <CAM-tV--ZETHpZNE54sRGG9pASQvo1Yiy-KVwcmj=MxbcNU292A@HIDDEN>
 <87h8kuj81s.fsf@HIDDEN> <8336we0xdf.fsf@HIDDEN>
 <87d0vij66g.fsf@HIDDEN> <83y3e5zuss.fsf@HIDDEN>
Date: Fri, 20 Jul 2018 19:30:52 +0200
In-Reply-To: <83y3e5zuss.fsf@HIDDEN> (Eli Zaretskii's message of "Fri, 20 Jul
 2018 20:22:27 +0300")
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On Fri, 20 Jul 2018 20:22:27 +0300 Eli Zaretskii <eliz@HIDDEN> wrote:

>> From: Stephen Berman <stephen.berman@HIDDEN>
>> Cc: npostavs@HIDDEN,  32215 <at> debbugs.gnu.org
>> Date: Fri, 20 Jul 2018 17:08:39 +0200
>>=20
>> > Ah, I think I understand why I couldn't reproduce the problem: it
>> > seems to only happen if default-directory is "~/" before starting the
>> > recipe.  If it is something else, the problem doesn't happen.  Can you
>> > confirm?
>>=20
>> I'm afraid not:
>>=20
>> 0. emacs -Q
>> 1. M-x cd RET /tmp/ RET
>> 2. C-x d /~s TAB
>>=20
>> results in this minibuffer display:
>>=20
>> Dired (directory): /tmp//~s=E2=96=88[No match]
>
> Try a subdirectory of your home directory.

Perhaps I'm misunderstanding what you're suggesting, but with the
following I still get the same behavior:

0. emacs -Q
1. M-x cd RET ~/Downloads/ RET
2. C-x d /~s TAB

results in this minibuffer display:

Dired (directory): ~/Downloads//~s=E2=96=88[No match]

Steve Berman

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

Message received at 32215 <at> debbugs.gnu.org:

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Date: Fri, 20 Jul 2018 20:22:27 +0300
Message-Id: <83y3e5zuss.fsf@HIDDEN>
From: Eli Zaretskii <eliz@HIDDEN>
To: Stephen Berman <stephen.berman@HIDDEN>
In-reply-to: <87d0vij66g.fsf@HIDDEN> (message from Stephen Berman on Fri, 20
 Jul 2018 17:08:39 +0200)
Subject: Re: bug#32215: 27.0.50;
 Minibuffer completion fails with /~<partial-name>
References: <87tvovhzzt.fsf@HIDDEN> <834lgv2imf.fsf@HIDDEN>
 <87pnzjhtom.fsf@HIDDEN> <87bmb27m98.fsf@HIDDEN>
 <87va9ajol1.fsf@HIDDEN>
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> From: Stephen Berman <stephen.berman@HIDDEN>
> Cc: npostavs@HIDDEN,  32215 <at> debbugs.gnu.org
> Date: Fri, 20 Jul 2018 17:08:39 +0200
> 
> > Ah, I think I understand why I couldn't reproduce the problem: it
> > seems to only happen if default-directory is "~/" before starting the
> > recipe.  If it is something else, the problem doesn't happen.  Can you
> > confirm?
> 
> I'm afraid not:
> 
> 0. emacs -Q
> 1. M-x cd RET /tmp/ RET
> 2. C-x d /~s TAB
> 
> results in this minibuffer display:
> 
> Dired (directory): /tmp//~s█[No match]

Try a subdirectory of your home directory.

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

Message received at 32215 <at> debbugs.gnu.org:

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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>
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Date: Fri, 20 Jul 2018 17:08:39 +0200
In-Reply-To: <8336we0xdf.fsf@HIDDEN> (Eli Zaretskii's message of "Fri, 20 Jul
 2018 17:56:12 +0300")
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On Fri, 20 Jul 2018 17:56:12 +0300 Eli Zaretskii <eliz@HIDDEN> wrote:

>> From: Stephen Berman <stephen.berman@HIDDEN>
>> Cc: Eli Zaretskii <eliz@HIDDEN>,  32215 <at> debbugs.gnu.org
>> Date: Fri, 20 Jul 2018 16:28:15 +0200
>>=20
>> Nothing is removed.  To be explicit, when I start with -Q and type 'C-x
>> d', the minibuffer displays this:
>>=20
>> Dired (directory): ~/
>>=20
>> with point after '/'.  When I now type '/', the face of '~/' changes to
>> shadow, and when I then type '~', the face of the second '/' also
>> changes to shadow.  When I now type TAB, the minibuffer looks like this:
>>=20
>> Dired (directory): ~//~
>>=20
>> with '~//' in shadow face, and a *Completions* buffer pops up and shows
>> the directory names of all members of (system-users).  When I now type
>> 's TAB', the face of the second '/' changes from shadow to default
>> (black), '[No match]' appears after the cursor and the *Completions*
>> buffer disappears.  I.e., the minibuffer looks like this on hitting TAB:
>>=20
>> Dired (directory): ~//~s=E2=96=88[No match]
>>=20
>> with '~/' in shadow face and '/~s' in default face, and after a couple
>> of seconds, '[No match]' disappears, leaving the rest.
>
> Ah, I think I understand why I couldn't reproduce the problem: it
> seems to only happen if default-directory is "~/" before starting the
> recipe.  If it is something else, the problem doesn't happen.  Can you
> confirm?

I'm afraid not:

0. emacs -Q
1. M-x cd RET /tmp/ RET
2. C-x d /~s TAB

results in this minibuffer display:

Dired (directory): /tmp//~s=E2=96=88[No match]

with '/tmp/' in shadow face and '/~s' in default face.  Same thing with
any other value of default-directory I've tried.

Steve Berman

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

Message received at 32215 <at> debbugs.gnu.org:

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 Jul 2018 17:56:12 +0300)
Subject: Re: bug#32215: 27.0.50;
 Minibuffer completion fails with /~<partial-name>
References: <87tvovhzzt.fsf@HIDDEN> <834lgv2imf.fsf@HIDDEN>
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> Date: Fri, 20 Jul 2018 17:56:12 +0300
> From: Eli Zaretskii <eliz@HIDDEN>
> Cc: 32215 <at> debbugs.gnu.org, npostavs@HIDDEN
> 
> Ah, I think I understand why I couldn't reproduce the problem: it
> seems to only happen if default-directory is "~/" before starting the
> recipe.  If it is something else, the problem doesn't happen.  Can you
> confirm?

And I see this in Emacs 26, 25, and 24, so it isn't a new problem.

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

Message received at 32215 <at> debbugs.gnu.org:

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To: Stephen Berman <stephen.berman@HIDDEN>
In-reply-to: <87h8kuj81s.fsf@HIDDEN> (message from Stephen Berman on Fri, 20
 Jul 2018 16:28:15 +0200)
Subject: Re: bug#32215: 27.0.50;
 Minibuffer completion fails with /~<partial-name>
References: <87tvovhzzt.fsf@HIDDEN> <834lgv2imf.fsf@HIDDEN>
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> From: Stephen Berman <stephen.berman@HIDDEN>
> Cc: Eli Zaretskii <eliz@HIDDEN>,  32215 <at> debbugs.gnu.org
> Date: Fri, 20 Jul 2018 16:28:15 +0200
> 
> Nothing is removed.  To be explicit, when I start with -Q and type 'C-x
> d', the minibuffer displays this:
> 
> Dired (directory): ~/
> 
> with point after '/'.  When I now type '/', the face of '~/' changes to
> shadow, and when I then type '~', the face of the second '/' also
> changes to shadow.  When I now type TAB, the minibuffer looks like this:
> 
> Dired (directory): ~//~
> 
> with '~//' in shadow face, and a *Completions* buffer pops up and shows
> the directory names of all members of (system-users).  When I now type
> 's TAB', the face of the second '/' changes from shadow to default
> (black), '[No match]' appears after the cursor and the *Completions*
> buffer disappears.  I.e., the minibuffer looks like this on hitting TAB:
> 
> Dired (directory): ~//~s█[No match]
> 
> with '~/' in shadow face and '/~s' in default face, and after a couple
> of seconds, '[No match]' disappears, leaving the rest.

Ah, I think I understand why I couldn't reproduce the problem: it
seems to only happen if default-directory is "~/" before starting the
recipe.  If it is something else, the problem doesn't happen.  Can you
confirm?

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

Message received at 32215 <at> debbugs.gnu.org:

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From: Stephen Berman <stephen.berman@HIDDEN>
To: Noam Postavsky <npostavs@HIDDEN>
Subject: Re: bug#32215: 27.0.50;
 Minibuffer completion fails with /~<partial-name>
References: <87tvovhzzt.fsf@HIDDEN> <834lgv2imf.fsf@HIDDEN>
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Date: Fri, 20 Jul 2018 16:28:15 +0200
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On Fri, 20 Jul 2018 09:58:10 -0400 Noam Postavsky <npostavs@HIDDEN> wrot=
e:

> On 20 July 2018 at 04:31, Stephen Berman <stephen.berman@HIDDEN> wrote:
>> On Thu, 19 Jul 2018 21:02:11 -0400 Noam Postavsky <npostavs@HIDDEN> w=
rote:
>>
>>> 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 TA=
B'
>>>>>>    completes to steve/
>>>>>>
>>>>>> The failure only happens with '/~<partial-name>', typing e.g. '~/Dow=
nl
>>>>>> 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.
>>
>> Like Eli, I'm surprised you see it on Windows.
>
> Oh, I skipped the TAB in step 1. With that, all of the leading text
> before the ~ is removed, so there is no problem (and it indeed
> completes immediately to my current user on Windows).
>
>>
>>>                                          I notice that the after typing
>>> the first letter of the user name, the leading "/" is no longer in
>>> shadow face,
>>
>> Yes, I didn't notice that when I tested before but I do now.
>
> Ah, so when you hit TAB, the leading "/" is not removed?

Nothing is removed.  To be explicit, when I start with -Q and type 'C-x
d', the minibuffer displays this:

Dired (directory): ~/

with point after '/'.  When I now type '/', the face of '~/' changes to
shadow, and when I then type '~', the face of the second '/' also
changes to shadow.  When I now type TAB, the minibuffer looks like this:

Dired (directory): ~//~

with '~//' in shadow face, and a *Completions* buffer pops up and shows
the directory names of all members of (system-users).  When I now type
's TAB', the face of the second '/' changes from shadow to default
(black), '[No match]' appears after the cursor and the *Completions*
buffer disappears.  I.e., the minibuffer looks like this on hitting TAB:

Dired (directory): ~//~s=E2=96=88[No match]

with '~/' in shadow face and '/~s' in default face, and after a couple
of seconds, '[No match]' disappears, leaving the rest.

Steve Berman

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

Message received at 32215 <at> debbugs.gnu.org:

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From: Noam Postavsky <npostavs@HIDDEN>
Date: Fri, 20 Jul 2018 09:58:10 -0400
Message-ID: <CAM-tV--ZETHpZNE54sRGG9pASQvo1Yiy-KVwcmj=MxbcNU292A@HIDDEN>
Subject: Re: bug#32215: 27.0.50;
 Minibuffer completion fails with /~<partial-name>
To: Stephen Berman <stephen.berman@HIDDEN>
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On 20 July 2018 at 04:31, Stephen Berman <stephen.berman@HIDDEN> wrote:
> On Thu, 19 Jul 2018 21:02:11 -0400 Noam Postavsky <npostavs@HIDDEN> wrote:
>
>> 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.
>
> Like Eli, I'm surprised you see it on Windows.

Oh, I skipped the TAB in step 1. With that, all of the leading text
before the ~ is removed, so there is no problem (and it indeed
completes immediately to my current user on Windows).

>
>>                                          I notice that the after typing
>> the first letter of the user name, the leading "/" is no longer in
>> shadow face,
>
> Yes, I didn't notice that when I tested before but I do now.

Ah, so when you hit TAB, the leading "/" is not removed?

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

Message received at 32215 <at> debbugs.gnu.org:

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From: Stephen Berman <stephen.berman@HIDDEN>
To: Noam Postavsky <npostavs@HIDDEN>
Subject: Re: bug#32215: 27.0.50;
 Minibuffer completion fails with /~<partial-name>
References: <87tvovhzzt.fsf@HIDDEN> <834lgv2imf.fsf@HIDDEN>
 <87pnzjhtom.fsf@HIDDEN> <87bmb27m98.fsf@HIDDEN>
Date: Fri, 20 Jul 2018 10:31:06 +0200
In-Reply-To: <87bmb27m98.fsf@HIDDEN> (Noam Postavsky's message of "Thu, 19
 Jul 2018 21:02:11 -0400")
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On Thu, 19 Jul 2018 21:02:11 -0400 Noam Postavsky <npostavs@HIDDEN> wrote:

> 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.  

Like Eli, I'm surprised you see it on Windows.

>                                          I notice that the after typing
> the first letter of the user name, the leading "/" is no longer in
> shadow face, 

Yes, I didn't notice that when I tested before but I do now.

>              i.e., Emacs is looking for a directory starting with "~"
> under the root directory.

I suppose so, though it's still surprising that it only completes to
/~steve/ when typing /~steve, not /~stev.  Note that (at least here)
'/home/stev TAB' also completes to /home/steve/.

Steve Berman

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

Message received at 32215 <at> debbugs.gnu.org:

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Subject: Re: bug#32215: 27.0.50;
 Minibuffer completion fails with /~<partial-name>
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> From: Noam Postavsky <npostavs@HIDDEN>
> Cc: Eli Zaretskii <eliz@HIDDEN>,  32215 <at> debbugs.gnu.org
> Date: Thu, 19 Jul 2018 21:02:11 -0400
> 
> I see it on both Windows and GNU/Linux.

What did you type on Windows, exactly?  If I type "C-x d / ~ TAB", I
get a single completion with my user-name, as expected.  How did you
get more than one completion?

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

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From: Eli Zaretskii <eliz@HIDDEN>
To: Stephen Berman <stephen.berman@HIDDEN>
In-reply-to: <87pnzjhtom.fsf@HIDDEN> (message from Stephen Berman on Thu, 19
 Jul 2018 22:11:37 +0200)
Subject: Re: bug#32215: 27.0.50;
 Minibuffer completion fails with /~<partial-name>
References: <87tvovhzzt.fsf@HIDDEN> <834lgv2imf.fsf@HIDDEN>
 <87pnzjhtom.fsf@HIDDEN>
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> From: Stephen Berman <stephen.berman@HIDDEN>
> Cc: 32215 <at> debbugs.gnu.org
> Date: Thu, 19 Jul 2018 22:11:37 +0200
> 
> >> 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

I tested on GNU/Linux, yes.

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

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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.

Message received at 32215 <at> debbugs.gnu.org:

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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.

Message received at 32215 <at> debbugs.gnu.org:

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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
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Subject: Re: bug#32215: 27.0.50;
 Minibuffer completion fails with /~<partial-name>
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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
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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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