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bug#33050: 27.0.50; [macOS] Problem with process input with process-conn
From: |
Thomas Fitzsimmons |
Subject: |
bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil |
Date: |
Tue, 23 Oct 2018 21:55:13 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
Filipp Gunbin <fgunbin@fastmail.fm> writes:
> Thomas,
>
> On 22/10/2018 21:53 -0400, Thomas Fitzsimmons wrote:
> [..]
>> As for that specific line, I may have copied it from another part of
>> Emacs that reads a password via a pipe; when I look now at other places
>> that bind this variable to nil, I see comments like this one in
>> lisp/gnus/nntp.el:
>>
>> ;; A non-nil connection type results in mightily odd behavior where
>> ;; (process-send-string proc "\^M") ends up sending a "\n" to the
>> ;; ssh process. --Stef
>> ;; Also a nil connection allow ssh-askpass to work under X11.
>> (let ((process-connection-type nil))
>> (apply 'start-process "nntpd" buffer command))
>>
>> Today I tested my setup (x86_64 GNU/Linux, OpenLDAP ldapsearch 2.4.40)
>> without setting process-connection-type to nil, and it still works. The
>> documentation for that variable says that the fallback is to use a pipe
>> if all ptys are busy in which case I guess this would still fail for
>> you.
>>
>> Your test case behaves the same way for me on x86_64 GNU/Linux.
>
> Do you mean it fails, or it works ok (regardless of
> process-connection-type value)?
I meant its behaviour is the same for me on x86_64 GNU/Linux as what you
described its behaviour to be on Mac OS. Without:
(process-connection-type nil)
the test case succeeds. With it, the test case hangs.
However if I change the test case program from:
"/usr/bin/read" "-p" "enter something:"
to:
"ldapsearch" "-W"
it does not hang regardless of the process-connection-type setting.
Because it is missing the other options, after reading the password
ldapsearch just fails to contact the server, after which my-process-buf
contains...
...without (process-connection-type nil)):
Enter LDAP Password:
ldap_sasl_interactive_bind_s: can't contact LDAP server (-1)
Process my-process<4> exited abnormally with code 255
...with (process-connection-type nil)):
Enter LDAP Password: ldap_sasl_interactive_bind_s: can't contact LDAP server
(-1)
Process my-process<4> exited abnormally with code 255
The only difference seems to be the missing newline.
I got the above results with both my system ldapsearch (2.4.40) and with
ldapseach 2.4.28 which I built from source.
Anyway, at least on my system, it seems that /usr/bin/read is not doing
the same thing as ldapsearch -W to read the string.
What happens when you try the test case with "ldapsearch" "-W"?
>> Maybe our ldapsearch commands are behaving differently. What version of
>> ldapsearch are you using?
>
> I have OpenLDAP 2.4.28.
OK, I doubt the problem is related to OpenLDAP version differences, but
if it's easy it might be worth trying a newer one.
Thomas
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Filipp Gunbin, 2018/10/15
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Eli Zaretskii, 2018/10/20
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Filipp Gunbin, 2018/10/22
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Thomas Fitzsimmons, 2018/10/22
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Filipp Gunbin, 2018/10/23
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil,
Thomas Fitzsimmons <=
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Filipp Gunbin, 2018/10/24
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Filipp Gunbin, 2018/10/24
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Thomas Fitzsimmons, 2018/10/24
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Filipp Gunbin, 2018/10/24
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Filipp Gunbin, 2018/10/24
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Thomas Fitzsimmons, 2018/10/24
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Filipp Gunbin, 2018/10/25
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Eli Zaretskii, 2018/10/25
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Filipp Gunbin, 2018/10/25
- bug#33050: 27.0.50; [macOS] Problem with process input with process-connection-type nil, Eli Zaretskii, 2018/10/25