From: Stefan Monnier <monnier@iro.umontreal.ca>
To: "Drew Adams" <drew.adams@oracle.com>
Cc: 6256@debbugs.gnu.org
Subject: bug#6256: 24.0.50; read-event in `repeat' command
Date: Wed, 20 Oct 2010 11:47:49 -0400 [thread overview]
Message-ID: <jwv7hhcho3z.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <02C729C63ABB48A898C742329EE4ADB0@us.oracle.com> (Drew Adams's message of "Tue, 19 Oct 2010 15:17:45 -0700")
> I tried debugging it that way. I added this just after the (let ((evt
> (read-key))), that is BEFORE the `and' test of the `while':
> (message "EVT: %S, R-R-CHAR: %S" evt repeat-repeat-char)
That sounds right.
> And because it exits immediately _no_ debug message appears in *Messages*.
That's very odd.
> That tells me that it exited during `read-key', not
> because the event/key tested did not match (`while' test = nil).
That's one possibility, indeed, tho maybe the code never gets to
read-key at all.
> Apparently `read-key' itself exits out to the `unwind-protect'
> protection code in this scenario.
That's only if it signals an error, which you should then see somewhere.
> In emacs -Q, however, with just the Bookmark+ files loaded, I do not
> see the problem. That is presumably what you are seeing.
Indeed. So it does work for you in Emacs-23, tho only for the case of
"emacs -Q"? If so, you may want to try and do the binary-search dance
on your .emacs to see what's interfering.
> Perhaps you can suggest something I can do to determine what is
> happening that causes it (presumably) to exit the `while' during the
> `read-key', jumping out to the `unwind-protect'. Is there some debug
> message I can put at the beginning of the the `unwind-protect'
> protection code to see what happened? Can I put some debug stuff into
> `read-key'?
You can start by adding various `message' calls around the while, inside
the while, around the read-key call, etc...
Using edebug in this code is sadly problematic, so we're left with
print-debugging.
> You still have not said anything about what's wrong with that solution.
It does not work for me (i.e. for X11 mouse wheel events).
> Again (coming back to my question), this is what I suggested:
> (while (let ((evt (read-event)))
> (and (equal (event-basic-type evt)
> (event-basic-type repeat-repeat-char))
> (equal (event-modifiers evt)
> (event-modifiers repeat-repeat-char))))
> (repeat repeat-arg))
You could also try
(while (let ((evt (read-event)))
(message "EVT: %S, R-R-CHAR: %S" evt repeat-repeat-char)
(and (equal (event-basic-type evt)
(event-basic-type repeat-repeat-char))
(equal (event-modifiers evt)
(event-modifiers repeat-repeat-char))))
(repeat repeat-arg))
> It's pretty simple. It also seems logical, and it says just what we
> want to be done: if the event's components are all the same as before
> then repeat. Dunno why you have a problem with this. What problems
> do you see with this approach?
That on X11, the second event is *not* the same as the first because
mouse wheel send first a down and then an up event.
Stefan
next prev parent reply other threads:[~2010-10-20 15:47 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-24 15:11 bug#6256: 24.0.50; read-event in `repeat' command Drew Adams
2010-05-24 16:28 ` Drew Adams
2010-05-24 23:05 ` Drew Adams
2010-05-25 0:06 ` Lennart Borgman
2010-05-25 2:41 ` Stefan Monnier
2010-07-03 21:24 ` Drew Adams
2010-07-04 22:45 ` Stefan Monnier
2010-07-07 14:43 ` Drew Adams
2010-07-21 15:54 ` Drew Adams
2010-08-28 15:19 ` Drew Adams
2010-09-11 18:25 ` Stefan Monnier
2010-09-11 22:34 ` Drew Adams
2010-09-12 16:06 ` Drew Adams
2010-09-17 3:34 ` Drew Adams
2010-09-22 14:01 ` bug#6256: [PATCH] " Drew Adams
2010-09-25 14:30 ` Drew Adams
2010-10-18 18:40 ` Stefan Monnier
2010-10-18 21:12 ` Drew Adams
2010-10-19 1:13 ` Stefan Monnier
2010-10-19 6:50 ` Jan Djärv
2010-10-19 14:03 ` Drew Adams
[not found] ` <jwv4ocjuvm1.fsf-monnier+emacs@gnu.org>
[not found] ` <0658C0CCC79D466BA9DE233F5980CAE5@us.oracle.com>
[not found] ` <jwvpqv7rp50.fsf-monnier+emacs@gnu.org>
2010-10-19 19:21 ` Drew Adams
2010-10-19 20:54 ` Stefan Monnier
2010-10-19 22:17 ` Drew Adams
2010-10-20 15:47 ` Stefan Monnier [this message]
2010-10-20 20:55 ` Drew Adams
2010-10-21 1:08 ` Stefan Monnier
2010-10-22 18:43 ` Drew Adams
2010-10-22 19:47 ` Stefan Monnier
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