GNU logs - #24888, boring messages

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Subject: bug#24888: pcomplete/cd returns "../" before "./" and does not include empty completion in results of pcomplete-at-point
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From: =?UTF-8?Q?Cl=c3=a9ment_Pit--Claudel?= <clement.pitclaudel@HIDDEN>
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Subject: pcomplete/cd returns "../" before "./" and does not include empty
 completion in results of pcomplete-at-point

--VI3hiPWK90jmqRrRMkWtPnWM1thahW5PK
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pcomplete's ordering of completion makes it inconvenient to input directo=
ry names to 'cd' to when using company.  Example scenario:

* Start a shell (M-x shell)
* Enable company-mode
* Start typing `cd /home/clement/`

This invokes (assuming a low enough completion delay) pcomplete-at-point =
(the call goes through company-capf, which relies on completion-at-point-=
functions, which contains comint-dynamic-completion, which includes pcomp=
lete-at-point).  The results of this pcomplete invocation include "../" a=
nd "./", followed by name-ordered file names.  There are two problems:

* "../" comes first, which causes the default completion to be "/home/cle=
ment/../".
* pcomplete's list doesn't include "/home/clement/" itself.

Fixing the second problem would fix the first one; if pcomplete included =
"" in its results in addition to "./" and "../", and ranked it first, the=
re would be no problem (company would display "/home/clement/" first, jus=
t like company-files does)

Cheers,
Cl=C3=A9ment.

In GNU Emacs 26.0.50.14 (x86_64-pc-linux-gnu, GTK+ Version 3.18.9)
 of 2016-10-29 built on clem-w50-mint
Repository revision: fae796fe2695b419aa9277d243633bae400a147a
Windowing system distributor 'The X.Org Foundation', version 11.0.1180400=
0
System Description:	Linux Mint 18 Sarah

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To: =?UTF-8?Q?Cl=C3=A9ment?= Pit--Claudel <clement.pitclaudel@HIDDEN>
Subject: bug#24888: Acknowledgement (pcomplete/cd returns "../" before
 "./" and does not include empty completion in results of pcomplete-at-point)
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Subject: bug#24888: pcomplete/cd returns "../" before "./" and does not include empty completion in results of pcomplete-at-point
Resent-From: Dmitry Gutov <dgutov@HIDDEN>
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References: <c39f133e-e157-e36b-e93e-53e8b0ee5f81@HIDDEN>
From: Dmitry Gutov <dgutov@HIDDEN>
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Date: Mon, 7 Nov 2016 02:15:00 +0200
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On 06.11.2016 01:53, Clément Pit--Claudel wrote:

> This invokes (assuming a low enough completion delay) pcomplete-at-point (the call goes through company-capf, which relies on completion-at-point-functions, which contains comint-dynamic-completion, which includes pcomplete-at-point).

Does it? It seems to go through comint-completion-at-point here, which 
tries comint-c-a-p-replace-by-expanded-history and 
comint-filename-completion, neither of which reference pcomplete.

comint-filename-completion seems to be the function to investigate.

> * "../" comes first, which causes the default completion to be "/home/clement/../".
> * pcomplete's list doesn't include "/home/clement/" itself.
>
> Fixing the second problem would fix the first one;

Sounds good to me.

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Subject: bug#24888: pcomplete/cd returns "../" before "./" and does not include empty completion in results of pcomplete-at-point
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Message-ID: <3629cbb6-abe6-c544-c9a1-ede630a73bba@HIDDEN>
Subject: Re: bug#24888: pcomplete/cd returns "../" before "./" and does not
 include empty completion in results of pcomplete-at-point
References: <c39f133e-e157-e36b-e93e-53e8b0ee5f81@HIDDEN>
 <74e70af1-2db5-0dbc-c3e4-6b575cd9bc93@HIDDEN>
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On 2016-11-06 19:15, Dmitry Gutov wrote:
> Does it? It seems to go through comint-completion-at-point here,
> which tries comint-c-a-p-replace-by-expanded-history and
> comint-filename-completion, neither of which reference pcomplete.

Putting a breakpoint in that function and running completion doesn't trig=
ger it for me :)

I see this:

    comint-dynamic-complete-functions is a variable defined in =E2=80=98c=
omint.el=E2=80=99.  Its
    value is (comint-c-a-p-replace-by-expanded-history
    shell-environment-variable-completion shell-command-completion
    shell-c-a-p-replace-by-expanded-directory pcomplete-completions-at-po=
int
    shell-filename-completion comint-filename-completion)

pcomplete-completions-at-point comes first, and is missing the "" complet=
ion.
There may be a similar problem with comint-filename-completion, of course=
=2E

Cl=C3=A9ment.


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On 07.11.2016 03:04, Clément Pit--Claudel wrote:

> I see this:
>
>     comint-dynamic-complete-functions is a variable defined in ‘comint.el’.  Its
>     value is (comint-c-a-p-replace-by-expanded-history
>     shell-environment-variable-completion shell-command-completion
>     shell-c-a-p-replace-by-expanded-directory pcomplete-completions-at-point
>     shell-filename-completion comint-filename-completion)

Oh, I see, sorry. M-x shell changes that variable's value.

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