GNU bug report logs - #28955
27.0.50; mouse event translation loses parameters

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Package: emacs; Reported by: sds@HIDDEN; Keywords: confirmed; dated Mon, 23 Oct 2017 14:46:02 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.

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From: Lars Ingebrigtsen <larsi@HIDDEN>
To: Sam Steingold <sds@HIDDEN>
Subject: Re: bug#28955: 27.0.50; mouse event translation loses parameters
References: <lzk1zlappt.fsf@HIDDEN> <87zhlguvw4.fsf@HIDDEN>
 <m1ims39qut.fsf@HIDDEN>
Date: Mon, 15 Jul 2019 19:04:32 +0200
In-Reply-To: <m1ims39qut.fsf@HIDDEN> (Sam Steingold's message of "Mon, 15 Jul
 2019 12:58:50 -0400")
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 Content preview: Sam Steingold <sds@HIDDEN> writes: > Either of the
 following:
 > > ``` > (define-key key-translation-map (kbd "<s-mouse-1>") (kbd
 "<mouse-2>")) > ``` [...] 
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Sam Steingold <sds@HIDDEN> writes:

> Either of the following:
>
> ```
> (define-key key-translation-map (kbd "<s-mouse-1>") (kbd "<mouse-2>"))
> ```

[...]

> 2. Actually clicking s-mouse-1:
> ```
> Debugger entered--Lisp error: (error "mouse-yank-primary must be bound to an event with ...")
>   call-interactively(mouse-yank-primary nil nil)
>   command-execute(mouse-yank-primary)

I don't have a Super key here, but I was able to reproduce the bug with
Hyper:

(define-key key-translation-map (kbd "<H-mouse-1>") (kbd "<mouse-2>"))

H-click-1:

Debugger entered--Lisp error: (error "mouse-yank-primary must be bound to an event with ...")
  call-interactively(mouse-yank-primary nil nil)
  command-execute(mouse-yank-primary)

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#28955; Package emacs. Full text available.
Added tag(s) confirmed. Request was from Lars Ingebrigtsen <larsi@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

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From: Sam Steingold <sds@HIDDEN>
To: Lars Ingebrigtsen <larsi@HIDDEN>
Subject: Re: bug#28955: 27.0.50; mouse event translation loses parameters
In-Reply-To: <87zhlguvw4.fsf@HIDDEN> (Lars Ingebrigtsen's message of
 "Sun, 14 Jul 2019 23:52:11 +0200")
References: <lzk1zlappt.fsf@HIDDEN> <87zhlguvw4.fsf@HIDDEN>
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> * Lars Ingebrigtsen <ynefv@HIDDEN> [2019-07-14 23:52:11 +0200]:
>
> Sam Steingold <sds@HIDDEN> writes:
>
>> (define-key key-translation-map (kbd "<s-mouse-1>") (kbd "<mouse-2>"))
>>
>> Alas, when I actually do command-mouse-1, I get an error:
>>
>> Debugger entered--Lisp error: (error "mouse-yank-primary must be bound
>> to an event with parameters")
>>   call-interactively(mouse-yank-primary nil nil)
>>   command-execute(mouse-yank-primary)
>>
>>
>> Charles writes:
>>
>> When you add the key translation and type s-mouse-1, the mouse click
>> event ends up losing its location information.
>>
>> For example, the following:
>>
>> (s-mouse-1 (#<window 3 on *scratch*> 227 (116 . 92) 143676325 nil 227
>> (16 . 5) nil (116 . 12) (7 . 16)))
>>
>> gets turned into just:
>>
>> mouse-2
>>
>> which leads to the error about the missing parameters.
>
> I'm not quite sure what the test case is here, but if I do this:
>
> (progn
>   (define-key key-translation-map (kbd "<s-mouse-1>") (kbd "<mouse-2>"))
>   (insert (format "%S" (read-event))))
> =>
> (S-down-mouse-1 (#<window 4 on *Minibuf-0*> 1 (322 . 8) 1947797915 nil 1
> (21 . 0) nil (322 . 8) (15 . 29)))
>
> then things look pretty normal, I think?  So (unless this has fixed in
> the meantime), how does one reproduce the error?

Either of the following:

```
(define-key key-translation-map (kbd "<s-mouse-1>") (kbd "<mouse-2>"))
```

or

```
(define-key function-key-map (kbd "<s-mouse-1>") (kbd "<mouse-2>"))
```

exhibit the same behavior:

1. `C-u C-h c s-mouse-1` ==>
```
   <mouse-2> (translated from <s-down-mouse-1> <s-mouse-1>) at that spot
   runs the command mouse-yank-primary
```

2. Actually clicking s-mouse-1:
```
Debugger entered--Lisp error: (error "mouse-yank-primary must be bound to an event with ...")
  call-interactively(mouse-yank-primary nil nil)
  command-execute(mouse-yank-primary)
```


-- 
Sam Steingold (http://sds.podval.org/) on darwin Ns 10.3.1671
http://childpsy.net http://calmchildstories.com http://steingoldpsychology.com
http://mideasttruth.com http://www.dhimmitude.org http://camera.org
Those who can't write, write manuals.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#28955; Package emacs. Full text available.

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From: Lars Ingebrigtsen <larsi@HIDDEN>
To: Sam Steingold <sds@HIDDEN>
Subject: Re: bug#28955: 27.0.50; mouse event translation loses parameters
References: <lzk1zlappt.fsf@HIDDEN>
Date: Sun, 14 Jul 2019 23:52:11 +0200
In-Reply-To: <lzk1zlappt.fsf@HIDDEN> (Sam Steingold's message of "Mon, 23 Oct
 2017 10:44:30 -0400")
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 Content preview: Sam Steingold <sds@HIDDEN> writes: > (define-key
 key-translation-map
 (kbd "<s-mouse-1>") (kbd "<mouse-2>")) > > Alas,
 when I actually do command-mouse-1, 
 I get an error: > > Debugger entered--Lisp error: (error "mouse-yank-primary
 must [...] 
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Sam Steingold <sds@HIDDEN> writes:

> (define-key key-translation-map (kbd "<s-mouse-1>") (kbd "<mouse-2>"))
>
> Alas, when I actually do command-mouse-1, I get an error:
>
> Debugger entered--Lisp error: (error "mouse-yank-primary must be bound to an event with parameters")
>   call-interactively(mouse-yank-primary nil nil)
>   command-execute(mouse-yank-primary)
>
>
> Charles writes:
>
> When you add the key translation and type s-mouse-1, the mouse click
> event ends up losing its location information.
>
> For example, the following:
>
> (s-mouse-1 (#<window 3 on *scratch*> 227 (116 . 92) 143676325 nil 227
> (16 . 5) nil (116 . 12) (7 . 16)))
>
> gets turned into just:
>
> mouse-2
>
> which leads to the error about the missing parameters.

I'm not quite sure what the test case is here, but if I do this:

(progn
  (define-key key-translation-map (kbd "<s-mouse-1>") (kbd "<mouse-2>"))
  (insert (format "%S" (read-event))))
=>
(S-down-mouse-1 (#<window 4 on  *Minibuf-0*> 1 (322 . 8) 1947797915 nil 1 (21 . 0) nil (322 . 8) (15 . 29)))

then things look pretty normal, I think?  So (unless this has fixed in
the meantime), how does one reproduce the error?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#28955; Package emacs. Full text available.

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From: Sam Steingold <sds@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: 27.0.50; mouse event translation loses parameters
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (darwin)
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Date: Mon, 23 Oct 2017 10:44:30 -0400
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 Content preview:  In GNU Emacs 27.0.50 (build 3, x86_64-apple-darwin16.7.0,
   NS appkit-1504.83 Version 10.12.6 (Build 16G29)) of 2017-10-16 built on Clr-Sam.local
    Repository revision: eed3a3d9e95d2c5346a23c9d92ca4e5848330183 Windowing system
    distributor 'Apple', version 10.3.1504 Configured using: 'configure --with-mailutils
    --with-ns PKG_CONFIG_PATH=/usr/local/opt/libxml2/lib/pkgconfig:/usr/local/opt/imagemagick/lib/pkgconfig/
    --without-makeinfo' [...] 
 
 Content analysis details:   (1.2 points, 10.0 required)
 
  pts rule name              description
 ---- ---------------------- --------------------------------------------------
  1.0 SPF_SOFTFAIL           SPF: sender does not match SPF record (softfail)
  0.0 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail
                             domains are different
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                             (sam.steingold[at]gmail.com)
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                              freemail headers are different

In GNU Emacs 27.0.50 (build 3, x86_64-apple-darwin16.7.0, NS appkit-1504.83 Version 10.12.6 (Build 16G29))
 of 2017-10-16 built on Clr-Sam.local
Repository revision: eed3a3d9e95d2c5346a23c9d92ca4e5848330183
Windowing system distributor 'Apple', version 10.3.1504
Configured using:
 'configure --with-mailutils --with-ns
 PKG_CONFIG_PATH=/usr/local/opt/libxml2/lib/pkgconfig:/usr/local/opt/imagemagick/lib/pkgconfig/
 --without-makeinfo'

Configured features:
JPEG NOTIFY ACL GNUTLS LIBXML2 ZLIB TOOLKIT_SCROLL_BARS NS

Important settings:
  value of $LC_ALL: en_US.UTF-8
  value of $LANG: C
  locale-coding-system: utf-8-unix

Some platforms lack second mouse button (most laptops), and some lack
both 2nd and 3rd (mac).
The almighty internet (https://emacs.stackexchange.com/q/20946/795 &
https://superuser.com/q/364575/98857) suggests

(define-key key-translation-map (kbd "<s-mouse-1>") (kbd "<mouse-2>"))

Alas, when I actually do command-mouse-1, I get an error:

--8<---------------cut here---------------start------------->8---
Debugger entered--Lisp error: (error "mouse-yank-primary must be bound to an event with parameters")
  call-interactively(mouse-yank-primary nil nil)
  command-execute(mouse-yank-primary)
--8<---------------cut here---------------end--------------->8---

Charles writes:

When you add the key translation and type s-mouse-1, the mouse click
event ends up losing its location information.

For example, the following:

(s-mouse-1 (#<window 3 on *scratch*> 227 (116 . 92) 143676325 nil 227 (16 . 5) nil (116 . 12) (7 . 16)))

gets turned into just:

mouse-2

which leads to the error about the missing parameters.

It happens in this part of keyboard.c:

--8<---------------cut here---------------start------------->8---
      /* Does mock_input indicate that we are re-reading a key sequence?  */
      if (t < mock_input)
	{
	  key = keybuf[t];
	  add_command_key (key);
	  if (current_kboard->immediate_echo)
	    {
	      /* Set immediate_echo to false so as to force echo_now to
		 redisplay (it will set immediate_echo right back to true).  */
	      current_kboard->immediate_echo = false;
	      echo_now ();
	    }
	}
--8<---------------cut here---------------end--------------->8---

For further details please see
https://lists.gnu.org/archive/html/emacs-devel/2017-10/msg00667.html
https://lists.gnu.org/archive/html/emacs-devel/2017-10/msg00678.html

-- 
Sam Steingold (http://sds.podval.org/) on darwin Ns 10.3.1504
http://steingoldpsychology.com http://www.childpsy.net http://camera.org
http://jij.org http://thereligionofpeace.com http://www.memritv.org
Daddy, why doesn't this magnet pick up this floppy disk?
Acknowledgement sent to sds@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#28955; Package emacs. Full text available.
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