GNU bug report logs - #5953
23.1.95; objc-mode doesn't fontify Objective-C 2.0 keywords @syntesize and @property correctly

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Aleksandr Skobelev <al.skobelev <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.1.95;
	objc-mode doesn't fontify Objective-C 2.0 keywords @syntesize and
	@property correctly
Date: Thu, 15 Apr 2010 19:00:08 +0400

objc-mode doesn't know anything about the new Objective-C 2.0
keywords like @property and @syntesize, for example. 

Message #12 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Leo <sdl.web <at> gmail.com>
To: Aleksandr Skobelev <al.skobelev <at> gmail.com>
Cc: 5953 <at> debbugs.gnu.org
Subject: Re: bug#5953: 23.1.95;
	objc-mode doesn't fontify Objective-C 2.0 keywords @syntesize and
	@property correctly
Date: Wed, 22 Aug 2012 11:32:25 +0800

On 2010-04-15 23:00 +0800, Aleksandr Skobelev wrote:
> objc-mode doesn't know anything about the new Objective-C 2.0
> keywords like @property and @syntesize, for example. 

Here is a list of OjbC2.0 directives with annotations:

  http://maniacdev.com/cheatsheetobjccd.pdf

Leo

Message #15 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Leo <sdl.web <at> gmail.com>
To: Aleksandr Skobelev <al.skobelev <at> gmail.com>
Cc: 5953 <at> debbugs.gnu.org, bug-cc-mode <at> gnu.org
Subject: Re: bug#5953: 23.1.95;
	objc-mode doesn't fontify Objective-C 2.0 keywords @syntesize and
	@property correctly
Date: Wed, 22 Aug 2012 17:39:50 +0800

[Message part 1 (text/plain, inline)]

On 2012-08-22 11:32 +0800, Leo wrote:
> Here is a list of OjbC2.0 directives with annotations:
>
>   http://maniacdev.com/cheatsheetobjccd.pdf
>
> Leo

I have compiled a patch to improve support for Objective C.

I am not sure where to add the following keywords so they live in
c-other-decl-kwds for now. Please review the patch. Thanks.

  1. @property
     : @property (attributes) Type propertyName;
  2. @dynamic
     : @dynamic aProperty, bProperty;
  3. @synthesize
     : @synthesize aProperty, bProperty, cProperty=_ivar;
  4. @compatibility_alias
     : @compatibility_alias AliasClassName ExistingClassName;

[0001-Add-ObjC-2.0-directives-support.patch (text/x-patch, inline)]

From 3ea4329978ebe2e5cb9d4bfd1e544277cf8e0352 Mon Sep 17 00:00:00 2001
From: Leo Liu <sdl.web <at> gmail.com>
Date: Wed, 22 Aug 2012 16:54:18 +0800
Subject: [PATCH] Add ObjC 2.0 directives support

---
 lisp/progmodes/cc-langs.el | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/lisp/progmodes/cc-langs.el b/lisp/progmodes/cc-langs.el
index 78be8ac2..4aed2048 100644
--- a/lisp/progmodes/cc-langs.el
+++ b/lisp/progmodes/cc-langs.el
@@ -1884,7 +1884,8 @@ (c-lang-defconst c-other-decl-kwds
 `c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses
 will be handled."
   t       nil
-  objc    '("@class" "@end" "@defs")
+  objc    '("@class" "@defs" "@end" "@property" "@dynamic" "@synthesize"
+	    "@compatibility_alias")
   java    '("import" "package")
   pike    '("import" "inherit"))
 
@@ -2006,7 +2007,8 @@ (c-lang-defconst c-protection-kwds
   "Access protection label keywords in classes."
   t    nil
   c++  '("private" "protected" "public")
-  objc '("@private" "@protected" "@public"))
+  objc '("@private" "@protected" "@package" "@public"
+	 "@required" "@optional"))
 
 (c-lang-defconst c-block-decls-with-vars
   "Keywords introducing declarations that can contain a block which
@@ -2176,7 +2178,7 @@ (c-lang-defconst c-block-stmt-1-kwds
   "Statement keywords followed directly by a substatement."
   t    '("do" "else")
   c++  '("do" "else" "try")
-  objc '("do" "else" "@finally" "@try")
+  objc '("do" "else" "@finally" "@try" "@autoreleasepool")
   java '("do" "else" "finally" "try")
   idl  nil)
 
@@ -2292,7 +2294,8 @@ (c-lang-defconst c-constant-kwds
   t       nil
   (c c++) '("NULL" ;; Not a keyword, but practically works as one.
 	    "false" "true")		; Defined in C99.
-  objc    '("nil" "Nil" "YES" "NO" "NS_DURING" "NS_HANDLER" "NS_ENDHANDLER")
+  objc    '("nil" "Nil" "YES" "NO" "IBAction" "IBOutlet"
+	    "NS_DURING" "NS_HANDLER" "NS_ENDHANDLER")
   idl     '("TRUE" "FALSE")
   java    '("true" "false" "null") ; technically "literals", not keywords
   pike    '("UNDEFINED")) ;; Not a keyword, but practically works as one.
-- 
1.7.12

Message #22 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Leo <sdl.web <at> gmail.com>
Cc: 5953 <at> debbugs.gnu.org, Alan Mackenzie <acm <at> muc.de>,
 Aleksandr Skobelev <al.skobelev <at> gmail.com>
Subject: Re: bug#5953: 23.1.95; objc-mode doesn't fontify Objective-C 2.0
 keywords @syntesize and @property correctly
Date: Fri, 01 Nov 2019 17:11:58 +0100

Leo <sdl.web <at> gmail.com> writes:

> On 2012-08-22 11:32 +0800, Leo wrote:
>> Here is a list of OjbC2.0 directives with annotations:
>>
>>   http://maniacdev.com/cheatsheetobjccd.pdf
>>
>> Leo
>
> I have compiled a patch to improve support for Objective C.
>
> I am not sure where to add the following keywords so they live in
> c-other-decl-kwds for now. Please review the patch. Thanks.
>
>   1. @property
>      : @property (attributes) Type propertyName;
>   2. @dynamic
>      : @dynamic aProperty, bProperty;
>   3. @synthesize
>      : @synthesize aProperty, bProperty, cProperty=_ivar;
>   4. @compatibility_alias
>      : @compatibility_alias AliasClassName ExistingClassName;

[...]

> -  objc    '("@class" "@end" "@defs")
> +  objc    '("@class" "@defs" "@end" "@property" "@dynamic" "@synthesize"
> +	    "@compatibility_alias")

(etc)

It seems like this patch (from seven years ago) was never applied.  I
know nothing about Objective C, though.  Alan, could you have a look at
this?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #25 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Alan Mackenzie <acm <at> muc.de>
Cc: 5953 <at> debbugs.gnu.org, Aleksandr Skobelev <al.skobelev <at> gmail.com>,
 Leo <sdl.web <at> gmail.com>
Subject: Re: bug#5953: 23.1.95; objc-mode doesn't fontify Objective-C 2.0
 keywords @syntesize and @property correctly
Date: Sat, 23 Nov 2019 14:14:41 +0100

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> It seems like this patch (from seven years ago) was never applied.  I
> know nothing about Objective C, though.  Alan, could you have a look at
> this?

Alan, did you find time to look at this patch?  It looks fairly
straightforward to me, but my knowledge of Objective C is very
rudimentary.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #28 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 5953 <at> debbugs.gnu.org, Alan Mackenzie <acm <at> muc.de>,
 Aleksandr Skobelev <al.skobelev <at> gmail.com>, Leo <sdl.web <at> gmail.com>
Subject: Re: bug#5953: 23.1.95; objc-mode doesn't fontify Objective-C 2.0
 keywords @syntesize and @property correctly
Date: Mon, 04 May 2020 02:53:59 +0200

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> Lars Ingebrigtsen <larsi <at> gnus.org> writes:
>
>> It seems like this patch (from seven years ago) was never applied.  I
>> know nothing about Objective C, though.  Alan, could you have a look at
>> this?
>
> Alan, did you find time to look at this patch?  It looks fairly
> straightforward to me, but my knowledge of Objective C is very
> rudimentary.

That was 23 weeks ago.  Alan, did you find any time to look at this
patch?  Thanks in advance.

Best regards,
Stefan Kangas

Message #31 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Alan Mackenzie <acm <at> muc.de>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: 5953 <at> debbugs.gnu.org, Lars Ingebrigtsen <larsi <at> gnus.org>,
 Aleksandr Skobelev <al.skobelev <at> gmail.com>, Leo <sdl.web <at> gmail.com>
Subject: Re: bug#5953: 23.1.95; objc-mode doesn't fontify Objective-C 2.0
 keywords @syntesize and @property correctly
Date: Sun, 24 May 2020 19:24:56 +0000

Hello, Stefan.

Sorry for the long delay in answering.

On Mon, May 04, 2020 at 02:53:59 +0200, Stefan Kangas wrote:
> Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> > Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> >> It seems like this patch (from seven years ago) was never applied.  I
> >> know nothing about Objective C, though.  Alan, could you have a look at
> >> this?

> > Alan, did you find time to look at this patch?  It looks fairly
> > straightforward to me, but my knowledge of Objective C is very
> > rudimentary.

> That was 23 weeks ago.  Alan, did you find any time to look at this
> patch?  Thanks in advance.

I've been trying to come to some sort of conclusion on this for quite a
long time now.

Somehow, adding nine keywords together with their semantics seems to go
outside the bounds of "trivial" for copyright purposes, even if they do
fit into the arbitrary maximum number of lines.  Kudos to Martin
Stjernholm, my predecessor, who made such compact amendments possible.
I don't know if Leo Liu, the author of the patch, has signed copyright
papers, but I strongly suspect not.

As I say, I don't know what to do with this patch.

> Best regards,
> Stefan Kangas

-- 
Alan Mackenzie (Nuremberg, Germany).

Message #34 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Dmitry Gutov <dgutov <at> yandex.ru>
To: Alan Mackenzie <acm <at> muc.de>, Stefan Kangas <stefan <at> marxist.se>
Cc: 5953 <at> debbugs.gnu.org, Lars Ingebrigtsen <larsi <at> gnus.org>,
 Aleksandr Skobelev <al.skobelev <at> gmail.com>, Leo <sdl.web <at> gmail.com>
Subject: Re: bug#5953: 23.1.95; objc-mode doesn't fontify Objective-C 2.0
 keywords @syntesize and @property correctly
Date: Sun, 24 May 2020 22:40:41 +0300

On 24.05.2020 22:24, Alan Mackenzie wrote:
> I don't know if Leo Liu, the author of the patch, has signed copyright
> papers, but I strongly suspect not.

He has, quite a few years ago.

Also see: git log --author "Leo Liu"

Message #37 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Richard Stallman <rms <at> gnu.org>
To: Alan Mackenzie <acm <at> muc.de>
Cc: 5953 <at> debbugs.gnu.org, larsi <at> gnus.org, stefan <at> marxist.se,
 al.skobelev <at> gmail.com, sdl.web <at> gmail.com
Subject: Re: bug#5953: 23.1.95;
 objc-mode doesn't fontify Objective-C 2.0 keywords @syntesize and
 @property correctly
Date: Mon, 25 May 2020 00:34:24 -0400

[[[ To any NSA and FBI agents reading my email: please consider    ]]]
[[[ whether defending the US Constitution against all enemies,     ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]

  > Somehow, adding nine keywords together with their semantics seems to go
  > outside the bounds of "trivial" for copyright purposes, even if they do
  > fit into the arbitrary maximum number of lines.

Would you like to show me the patch?  That description suggests that
maybe it is trivial.

-- 
Dr Richard Stallman
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)

Message #40 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Paul Smith <psmith <at> gnu.org>
To: rms <at> gnu.org, Alan Mackenzie <acm <at> muc.de>
Cc: 5953 <at> debbugs.gnu.org, larsi <at> gnus.org, stefan <at> marxist.se,
 al.skobelev <at> gmail.com, sdl.web <at> gmail.com
Subject: Re: bug#5953: 23.1.95; objc-mode doesn't fontify Objective-C 2.0
 keywords @syntesize and @property correctly
Date: Mon, 25 May 2020 00:52:29 -0400

On Mon, 2020-05-25 at 00:34 -0400, Richard Stallman wrote:
> [[[ To any NSA and FBI agents reading my email: please consider    ]]]
> [[[ whether defending the US Constitution against all enemies,     ]]]
> [[[ foreign or domestic, requires you to follow Snowden's example. ]]]
> 
>   > Somehow, adding nine keywords together with their semantics seems to go
>   > outside the bounds of "trivial" for copyright purposes, even if they do
>   > fit into the arbitrary maximum number of lines.
> 
> Would you like to show me the patch?  That description suggests that
> maybe it is trivial.

It's unfortunate that the SourceForge mailing list archives are so
gross.  FYI, this is a link to the email from 2012 with the patch
attached:

https://sourceforge.net/p/cc-mode/mailman/message/29722632/

This is a link to download the patch:

https://sourceforge.net/p/cc-mode/mailman/attachment/m2sjbfi7tl.fsf%40gmail.com/1/

I've included the patch itself below if you prefer that instead of the
above links.

Cheers!

--------------------------------
>From 3ea4329978ebe2e5cb9d4bfd1e544277cf8e0352 Mon Sep 17 00:00:00 2001
From: Leo Liu <sdl.web <at> gmail.com>
Date: Wed, 22 Aug 2012 16:54:18 +0800
Subject: [PATCH] Add ObjC 2.0 directives support

---
 lisp/progmodes/cc-langs.el | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/lisp/progmodes/cc-langs.el b/lisp/progmodes/cc-langs.el
index 78be8ac2..4aed2048 100644
--- a/lisp/progmodes/cc-langs.el
+++ b/lisp/progmodes/cc-langs.el
@@ -1884,7 +1884,8 @@ (c-lang-defconst c-other-decl-kwds
 `c-<>-type-kwds', or `c-<>-arglist-kwds' then the associated clauses
 will be handled."
   t       nil
-  objc    '("@class" "@end" "@defs")
+  objc    '("@class" "@defs" "@end" "@property" "@dynamic" "@synthesize"
+	    "@compatibility_alias")
   java    '("import" "package")
   pike    '("import" "inherit"))
 
@@ -2006,7 +2007,8 @@ (c-lang-defconst c-protection-kwds
   "Access protection label keywords in classes."
   t    nil
   c++  '("private" "protected" "public")
-  objc '("@private" "@protected" "@public"))
+  objc '("@private" "@protected" "@package" "@public"
+	 "@required" "@optional"))
 
 (c-lang-defconst c-block-decls-with-vars
   "Keywords introducing declarations that can contain a block which
@@ -2176,7 +2178,7 @@ (c-lang-defconst c-block-stmt-1-kwds
   "Statement keywords followed directly by a substatement."
   t    '("do" "else")
   c++  '("do" "else" "try")
-  objc '("do" "else" "@finally" "@try")
+  objc '("do" "else" "@finally" "@try" "@autoreleasepool")
   java '("do" "else" "finally" "try")
   idl  nil)
 
@@ -2292,7 +2294,8 @@ (c-lang-defconst c-constant-kwds
   t       nil
   (c c++) '("NULL" ;; Not a keyword, but practically works as one.
 	    "false" "true")		; Defined in C99.
-  objc    '("nil" "Nil" "YES" "NO" "NS_DURING" "NS_HANDLER" "NS_ENDHANDLER")
+  objc    '("nil" "Nil" "YES" "NO" "IBAction" "IBOutlet"
+	    "NS_DURING" "NS_HANDLER" "NS_ENDHANDLER")
   idl     '("TRUE" "FALSE")
   java    '("true" "false" "null") ; technically "literals", not keywords
   pike    '("UNDEFINED")) ;; Not a keyword, but practically works as one.
-- 
1.7.12

Message #43 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Richard Stallman <rms <at> gnu.org>
To: psmith <at> gnu.org
Cc: 5953 <at> debbugs.gnu.org, stefan <at> marxist.se, al.skobelev <at> gmail.com, acm <at> muc.de,
 larsi <at> gnus.org, sdl.web <at> gmail.com
Subject: Re: bug#5953: 23.1.95;
 objc-mode doesn't fontify Objective-C 2.0 keywords @syntesize and
 @property correctly
Date: Tue, 26 May 2020 00:11:50 -0400

[[[ To any NSA and FBI agents reading my email: please consider    ]]]
[[[ whether defending the US Constitution against all enemies,     ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]

This patch is trivial.  Only 7 lines are changed, and the change
is directly controlled by the job to be done, so it has no
creativing.

IANAL, but as I understand US copyright law, there is nothing
copyrightable in this change.

So you can just install it.

-- 
Dr Richard Stallman
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)

Message #46 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Dmitry Gutov <dgutov <at> yandex.ru>
To: rms <at> gnu.org, psmith <at> gnu.org
Cc: 5953 <at> debbugs.gnu.org, stefan <at> marxist.se, al.skobelev <at> gmail.com, acm <at> muc.de,
 larsi <at> gnus.org, sdl.web <at> gmail.com
Subject: Re: bug#5953: 23.1.95; objc-mode doesn't fontify Objective-C 2.0
 keywords @syntesize and @property correctly
Date: Tue, 26 May 2020 13:23:36 +0300

On 26.05.2020 07:11, Richard Stallman wrote:
> This patch is trivial.  Only 7 lines are changed, and the change
> is directly controlled by the job to be done, so it has no
> creativing.
> 
> IANAL, but as I understand US copyright law, there is nothing
> copyrightable in this change.

*And* the author has signed the copyright assignment papers long ago.

Good note about copyrightability, though.

Message #49 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Alan Mackenzie <acm <at> muc.de>
To: Richard Stallman <rms <at> gnu.org>, Dmitry Gutov <dgutov <at> yandex.ru>
Cc: 5953 <at> debbugs.gnu.org, stefan <at> marxist.se, al.skobelev <at> gmail.com,
 psmith <at> gnu.org, larsi <at> gnus.org, sdl.web <at> gmail.com
Subject: Re: bug#5953: 23.1.95; objc-mode doesn't fontify Objective-C 2.0
 keywords @syntesize and @property correctly
Date: Tue, 26 May 2020 18:31:05 +0000

Hello, Richard and Dmitry.

On Tue, May 26, 2020 at 13:23:36 +0300, Dmitry Gutov wrote:
> On 26.05.2020 07:11, Richard Stallman wrote:
> > This patch is trivial.  Only 7 lines are changed, and the change
> > is directly controlled by the job to be done, so it has no
> > creativing.

OK, thanks for that.

> > IANAL, but as I understand US copyright law, there is nothing
> > copyrightable in this change.

That is good to know.

> *And* the author has signed the copyright assignment papers long ago.

That is also very good to know.

> Good note about copyrightability, though.

And if you're still around, Leo, thanks very much for the patch!  I'll
commit it in the next day or so.

-- 
Alan Mackenzie (Nuremberg, Germany).

Message #52 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Paul Smith <psmith <at> gnu.org>
To: Alan Mackenzie <acm <at> muc.de>, Richard Stallman <rms <at> gnu.org>, Dmitry
 Gutov <dgutov <at> yandex.ru>
Cc: 5953 <at> debbugs.gnu.org, al.skobelev <at> gmail.com, stefan <at> marxist.se,
 larsi <at> gnus.org, sdl.web <at> gmail.com
Subject: Re: bug#5953: 23.1.95; objc-mode doesn't fontify Objective-C 2.0
 keywords @syntesize and @property correctly
Date: Tue, 26 May 2020 16:03:30 -0400

On Tue, 2020-05-26 at 18:31 +0000, Alan Mackenzie wrote:
> > *And* the author has signed the copyright assignment papers long
> > ago.
> 
> That is also very good to know.

Curious as to how to find out this information?

I checked the copyright list available in /gd/gnuorg and did not see
any entry for "Leo Liu".  There were plenty of other names containing
"Liu" (and some "Leo"'s) but I have no idea how to tell if one of them
is this same person.

Message #57 received at 5953-done <at> debbugs.gnu.org (full text, mbox):

From: Alan Mackenzie <acm <at> muc.de>
To: Richard Stallman <rms <at> gnu.org>, stefan <at> marxist.se,
 Dmitry Gutov <dgutov <at> yandex.ru>
Cc: 5953-done <at> debbugs.gnu.org, al.skobelev <at> gmail.com, larsi <at> gnus.org,
 sdl.web <at> gmail.com
Subject: Re: bug#5953: 23.1.95; objc-mode doesn't fontify Objective-C 2.0
 keywords @syntesize and @property correctly
Date: Tue, 26 May 2020 20:21:16 +0000

Hello, all.

On Tue, May 26, 2020 at 18:31:05 +0000, Alan Mackenzie wrote:
> On Tue, May 26, 2020 at 13:23:36 +0300, Dmitry Gutov wrote:
> > On 26.05.2020 07:11, Richard Stallman wrote:
> > > This patch is trivial.  Only 7 lines are changed, and the change
> > > is directly controlled by the job to be done, so it has no
> > > creativing.

> OK, thanks for that.

> > > IANAL, but as I understand US copyright law, there is nothing
> > > copyrightable in this change.

> That is good to know.

> > *And* the author has signed the copyright assignment papers long ago.

> That is also very good to know.

> > Good note about copyrightability, though.

> And if you're still around, Leo, thanks very much for the patch!  I'll
> commit it in the next day or so.

I've committed the patch, and with this post, I'm closing the bug.  Many
thanks to everybody who's been so patient.

> -- 
> Alan Mackenzie (Nuremberg, Germany).

Message #65 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Dmitry Gutov <dgutov <at> yandex.ru>
To: psmith <at> gnu.org, Alan Mackenzie <acm <at> muc.de>, Richard Stallman <rms <at> gnu.org>
Cc: 5953 <at> debbugs.gnu.org, al.skobelev <at> gmail.com, stefan <at> marxist.se,
 larsi <at> gnus.org, sdl.web <at> gmail.com
Subject: Re: bug#5953: 23.1.95; objc-mode doesn't fontify Objective-C 2.0
 keywords @syntesize and @property correctly
Date: Tue, 26 May 2020 23:23:07 +0300

On 26.05.2020 23:03, Paul Smith wrote:
> I checked the copyright list available in /gd/gnuorg and did not see
> any entry for "Leo Liu".  There were plenty of other names containing
> "Liu" (and some "Leo"'s) but I have no idea how to tell if one of them
> is this same person.

Search the file for his email (specifically: the part before @). The 
name written in the file is a bit different.

Message #68 received at 5953 <at> debbugs.gnu.org (full text, mbox):

From: Leo Liu <sdl.web <at> gmail.com>
To: Alan Mackenzie <acm <at> muc.de>
Cc: Richard Stallman <rms <at> gnu.org>, 5953 <at> debbugs.gnu.org,
 Dmitry Gutov <dgutov <at> yandex.ru>, stefan <at> marxist.se, al.skobelev <at> gmail.com,
 psmith <at> gnu.org, larsi <at> gnus.org
Subject: Re: bug#5953: 23.1.95;
 objc-mode doesn't fontify Objective-C 2.0 keywords @syntesize and
 @property correctly
Date: Wed, 27 May 2020 09:12:13 +0800

On 2020-05-26 18:31 +0000, Alan Mackenzie wrote:
>> Good note about copyrightability, though.
>
> And if you're still around, Leo, thanks very much for the patch!  I'll
> commit it in the next day or so.

Yes. Thanks everyone to get this closed. I am still around and read the
emacs bug and devel mailing lists at lease once a week ;)

Leo

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