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From: Noam Postavsky <npostavs@gmail.com>
To: Lars Ingebrigtsen <larsi@gnus.org>
Cc: abliss@gmail.com, 36591@debbugs.gnu.org
Subject: bug#36591: 26.2; Term's pager seems broken
Date: Thu, 25 Jul 2019 13:57:52 -0400	[thread overview]
Message-ID: <85blxij8tb.fsf@gmail.com> (raw)
In-Reply-To: <m3tvbaau1c.fsf@gnus.org> (Lars Ingebrigtsen's message of "Thu, 25 Jul 2019 19:44:15 +0200")

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Hm...  the problem was really when you call `set-process-filter' more
> than once?

The problem is when you call (set-process-filter PROC t) and then
(set-process-filter PROC FILTER), where FILTER is not t.  The first time
we correctly do delete_read_fd, but on the second time, we don't call
add_process_read_fd on PROC's fd, so we never hear from it again.

For a minimal example with subprocesses (not sockets), see
https://debbugs.gnu.org/cgi/bugreport.cgi?msg=17;att=1;bug=36591;filename=bug-36591-proc-filter-t.el

> I do not think connect_network_socket is called more than once per
> process...  so I don't think it should be a problem?  But the logic is
> rather difficult to follow.

Yeah, quite difficult.  I guess the question is whether
connect_network_socket will call add_process_read_fd even the first time
though.  I think not.  But there are other calls to add_process_read_fd,
so it's possible that we end up listening to the socket anyway.






  reply	other threads:[~2019-07-25 17:57 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-11  0:06 bug#36591: 26.2; Term's pager seems broken Adam Bliss
2019-07-23 13:53 ` Noam Postavsky
2019-07-23 17:40   ` Eli Zaretskii
2019-07-23 22:33     ` Adam Bliss
2019-07-24  2:07     ` Noam Postavsky
2019-07-24 15:07       ` Eli Zaretskii
2019-07-25  0:55         ` Noam Postavsky
2019-07-25 10:02           ` Lars Ingebrigtsen
2019-07-25 13:01             ` Eli Zaretskii
2019-07-25 16:58               ` Lars Ingebrigtsen
2019-07-25 13:01             ` Noam Postavsky
2019-07-25 17:01               ` Lars Ingebrigtsen
2019-07-25 17:28                 ` Noam Postavsky
2019-07-25 17:44                   ` Lars Ingebrigtsen
2019-07-25 17:57                     ` Noam Postavsky [this message]
2019-07-25 13:11           ` Eli Zaretskii
2019-07-25 22:38             ` Noam Postavsky
2020-08-21 12:58               ` Lars Ingebrigtsen

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