GNU bug report logs - #78830
30.1; M- browse-url-of-buffer doesn't work second time in a row

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

From: Milen Hristov <milen <at> andreshko.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.1; M- browse-url-of-buffer doesn't work second time in a row
Date: Wed, 18 Jun 2025 14:40:49 +0300

X-Debbugs-Cc: 
--text follows this line--

I’m editing pure HTML file over TRAMP. I want to preview it locally and I’m using M- browser-url-of-buffer. The command works flawlessly the first time and it opens the default browser (Safari in my case). I see that Emacs created a local temp file which the browser renders. 

When I try to invoke the command second time, after I have done changes to the HTML file (saved or not, the behaviour is the same) - Emacs invokes Mac OS native “Connect to server” menu, which tries automatically to connect to the remote server, where the actual file is. 
Expected behaviour is to make another temporary file with the new changes in the buffer and show it locally in the browser or if it needs to fetch the file from the remote, then use tramp, not MacOS “Connect to server"

When I restart the buffer and try again M- browse-url-of-buffer, it works again as expected. However every next time it shows the above described behaviour.

In short, "M- browse-url-of-buffer" always works the first time it is invoked for a buffer, but not after that.


In GNU Emacs 30.1 (build 1, aarch64-apple-darwin21.6.0, NS
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Message #8 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Milen Hristov <milen <at> andreshko.com>
Cc: 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1;
 M- browse-url-of-buffer doesn't work second time in a row
Date: Thu, 19 Jun 2025 09:01:31 +0300

> Date: Wed, 18 Jun 2025 14:40:49 +0300
> From:  Milen Hristov via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> 
> X-Debbugs-Cc: 
> --text follows this line--
> 
> I’m editing pure HTML file over TRAMP. I want to preview it locally and I’m using M- browser-url-of-buffer. The command works flawlessly the first time and it opens the default browser (Safari in my case). I see that Emacs created a local temp file which the browser renders. 
> 
> When I try to invoke the command second time, after I have done changes to the HTML file (saved or not, the behaviour is the same) - Emacs invokes Mac OS native “Connect to server” menu, which tries automatically to connect to the remote server, where the actual file is. 
> Expected behaviour is to make another temporary file with the new changes in the buffer and show it locally in the browser or if it needs to fetch the file from the remote, then use tramp, not MacOS “Connect to server"
> 
> When I restart the buffer and try again M- browse-url-of-buffer, it works again as expected. However every next time it shows the above described behaviour.
> 
> In short, "M- browse-url-of-buffer" always works the first time it is invoked for a buffer, but not after that.

I seem to be unable to reproduce this problem, perhaps because I'm not
on macOS.  Could you perhaps step with Edebug through
browse-url-of-file (which is called from browse-url-of-buffer) on the
second invocation, and see what goes wrong there and why?

I suspect this part could be relevant:

  (when (and (file-remote-p file)
             (not browse-url-temp-file-name))
    (setq browse-url-temp-file-name (file-local-copy file)
          file browse-url-temp-file-name))
  (browse-url (browse-url-file-url file))

perhaps because browse-url-temp-file-name is non-nil the second time?
But I don't know how the macOS "Connect to server" menu is invoked;
can you clarify that?

Message #11 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Milen Hristov <milen <at> andreshko.com>
Cc: 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second time
 in a row
Date: Thu, 19 Jun 2025 10:09:11 +0300

[Please use Reply All to reply, to keep our bug tracker CC'ed.]

> From: Milen Hristov <milen <at> andreshko.com>
> Date: Thu, 19 Jun 2025 09:37:32 +0300
> 
> 
> 
> > On 19 Jun 2025, at 9:01, Eli Zaretskii <eliz <at> gnu.org> wrote:
> > 
> >> Date: Wed, 18 Jun 2025 14:40:49 +0300
> >> From:  Milen Hristov via "Bug reports for GNU Emacs,
> >> the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> >> 
> >> X-Debbugs-Cc: 
> >> --text follows this line--
> >> 
> >> I’m editing pure HTML file over TRAMP. I want to preview it locally and I’m using M- browser-url-of-buffer. The command works flawlessly the first time and it opens the default browser (Safari in my case). I see that Emacs created a local temp file which the browser renders. 
> >> 
> >> When I try to invoke the command second time, after I have done changes to the HTML file (saved or not, the behaviour is the same) - Emacs invokes Mac OS native “Connect to server” menu, which tries automatically to connect to the remote server, where the actual file is. 
> >> Expected behaviour is to make another temporary file with the new changes in the buffer and show it locally in the browser or if it needs to fetch the file from the remote, then use tramp, not MacOS “Connect to server"
> >> 
> >> When I restart the buffer and try again M- browse-url-of-buffer, it works again as expected. However every next time it shows the above described behaviour.
> >> 
> >> In short, "M- browse-url-of-buffer" always works the first time it is invoked for a buffer, but not after that.
> > 
> > I seem to be unable to reproduce this problem, perhaps because I'm not
> > on macOS.  Could you perhaps step with Edebug through
> > browse-url-of-file (which is called from browse-url-of-buffer) on the
> > second invocation, and see what goes wrong there and why?
> > 
> > I suspect this part could be relevant:
> > 
> >  (when (and (file-remote-p file)
> >             (not browse-url-temp-file-name))
> >    (setq browse-url-temp-file-name (file-local-copy file)
> >          file browse-url-temp-file-name))
> >  (browse-url (browse-url-file-url file))
> > 
> > perhaps because browse-url-temp-file-name is non-nil the second time?
> > But I don't know how the macOS "Connect to server" menu is invoked;
> > can you clarify that?
> 
> 
> I stepped through it and it seems the MacOS dialog window is triggered on line 822 of browse-url.el:
> 
> 	(setq file-name browse-url-temp-file-name)
> 	(write-region (point-min) (point-max) file-name nil 'no-message))
>       (browse-url-of-file file-name))))
> 
> more specifically here: (browse-url-of-file file-name)

Thanks, that was my guess.  I asked you to step through the code of
browse-url-of-file itself, for that reason.  (Let me know if you need
help with using Edebug to step into function calls like this.)  The
code snippet I show is from browse-url-of-file, and it specifically
tests whether the file is remote or not, so I think something is wrong
in that logic.

Message #14 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: milen <at> andreshko.com
Cc: 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1;
 M- browse-url-of-buffer doesn't work second time in a row
Date: Sat, 28 Jun 2025 12:22:13 +0300

Ping!  Milen, could you please answer my questions, so we could make
progress with this bug?

> Cc: 78830 <at> debbugs.gnu.org
> Date: Thu, 19 Jun 2025 10:09:11 +0300
> From: Eli Zaretskii <eliz <at> gnu.org>
> 
> [Please use Reply All to reply, to keep our bug tracker CC'ed.]
> 
> > From: Milen Hristov <milen <at> andreshko.com>
> > Date: Thu, 19 Jun 2025 09:37:32 +0300
> > 
> > 
> > 
> > > On 19 Jun 2025, at 9:01, Eli Zaretskii <eliz <at> gnu.org> wrote:
> > > 
> > >> Date: Wed, 18 Jun 2025 14:40:49 +0300
> > >> From:  Milen Hristov via "Bug reports for GNU Emacs,
> > >> the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> > >> 
> > >> X-Debbugs-Cc: 
> > >> --text follows this line--
> > >> 
> > >> I’m editing pure HTML file over TRAMP. I want to preview it locally and I’m using M- browser-url-of-buffer. The command works flawlessly the first time and it opens the default browser (Safari in my case). I see that Emacs created a local temp file which the browser renders. 
> > >> 
> > >> When I try to invoke the command second time, after I have done changes to the HTML file (saved or not, the behaviour is the same) - Emacs invokes Mac OS native “Connect to server” menu, which tries automatically to connect to the remote server, where the actual file is. 
> > >> Expected behaviour is to make another temporary file with the new changes in the buffer and show it locally in the browser or if it needs to fetch the file from the remote, then use tramp, not MacOS “Connect to server"
> > >> 
> > >> When I restart the buffer and try again M- browse-url-of-buffer, it works again as expected. However every next time it shows the above described behaviour.
> > >> 
> > >> In short, "M- browse-url-of-buffer" always works the first time it is invoked for a buffer, but not after that.
> > > 
> > > I seem to be unable to reproduce this problem, perhaps because I'm not
> > > on macOS.  Could you perhaps step with Edebug through
> > > browse-url-of-file (which is called from browse-url-of-buffer) on the
> > > second invocation, and see what goes wrong there and why?
> > > 
> > > I suspect this part could be relevant:
> > > 
> > >  (when (and (file-remote-p file)
> > >             (not browse-url-temp-file-name))
> > >    (setq browse-url-temp-file-name (file-local-copy file)
> > >          file browse-url-temp-file-name))
> > >  (browse-url (browse-url-file-url file))
> > > 
> > > perhaps because browse-url-temp-file-name is non-nil the second time?
> > > But I don't know how the macOS "Connect to server" menu is invoked;
> > > can you clarify that?
> > 
> > 
> > I stepped through it and it seems the MacOS dialog window is triggered on line 822 of browse-url.el:
> > 
> > 	(setq file-name browse-url-temp-file-name)
> > 	(write-region (point-min) (point-max) file-name nil 'no-message))
> >       (browse-url-of-file file-name))))
> > 
> > more specifically here: (browse-url-of-file file-name)
> 
> Thanks, that was my guess.  I asked you to step through the code of
> browse-url-of-file itself, for that reason.  (Let me know if you need
> help with using Edebug to step into function calls like this.)  The
> code snippet I show is from browse-url-of-file, and it specifically
> tests whether the file is remote or not, so I think something is wrong
> in that logic.
> 
> 
> 
> 

Message #17 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Milen Hristov <milen <at> andreshko.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second time
 in a row
Date: Sat, 28 Jun 2025 15:13:37 +0300

Apologies, I think I misunderstood which function should I step through.

I’ve stepped in through browse-url-of-file now and I think I found a suspect:

on line 754 in: (browse-url (browse-url-file-url file))

`browse-url-file-url file` seems to be evaluated to `ftp://ssh/_path_to_the_remote_file`, which is the remote file path but with ftp:// protocol added for some reason at the beginning, whereas the first time when the function is triggered the evaluated url is file://_path_to_the_local_rendered_html i.e. the correct path to the local rendered html.

I hope this helps.

> On 28 Jun 2025, at 12:22, Eli Zaretskii <eliz <at> gnu.org> wrote:
> 
> Ping!  Milen, could you please answer my questions, so we could make
> progress with this bug?
> 
>> Cc: 78830 <at> debbugs.gnu.org
>> Date: Thu, 19 Jun 2025 10:09:11 +0300
>> From: Eli Zaretskii <eliz <at> gnu.org>
>> 
>> [Please use Reply All to reply, to keep our bug tracker CC'ed.]
>> 
>>> From: Milen Hristov <milen <at> andreshko.com>
>>> Date: Thu, 19 Jun 2025 09:37:32 +0300
>>> 
>>> 
>>> 
>>>> On 19 Jun 2025, at 9:01, Eli Zaretskii <eliz <at> gnu.org> wrote:
>>>> 
>>>>> Date: Wed, 18 Jun 2025 14:40:49 +0300
>>>>> From:  Milen Hristov via "Bug reports for GNU Emacs,
>>>>> the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
>>>>> 
>>>>> X-Debbugs-Cc: 
>>>>> --text follows this line--
>>>>> 
>>>>> I’m editing pure HTML file over TRAMP. I want to preview it locally and I’m using M- browser-url-of-buffer. The command works flawlessly the first time and it opens the default browser (Safari in my case). I see that Emacs created a local temp file which the browser renders. 
>>>>> 
>>>>> When I try to invoke the command second time, after I have done changes to the HTML file (saved or not, the behaviour is the same) - Emacs invokes Mac OS native “Connect to server” menu, which tries automatically to connect to the remote server, where the actual file is. 
>>>>> Expected behaviour is to make another temporary file with the new changes in the buffer and show it locally in the browser or if it needs to fetch the file from the remote, then use tramp, not MacOS “Connect to server"
>>>>> 
>>>>> When I restart the buffer and try again M- browse-url-of-buffer, it works again as expected. However every next time it shows the above described behaviour.
>>>>> 
>>>>> In short, "M- browse-url-of-buffer" always works the first time it is invoked for a buffer, but not after that.
>>>> 
>>>> I seem to be unable to reproduce this problem, perhaps because I'm not
>>>> on macOS.  Could you perhaps step with Edebug through
>>>> browse-url-of-file (which is called from browse-url-of-buffer) on the
>>>> second invocation, and see what goes wrong there and why?
>>>> 
>>>> I suspect this part could be relevant:
>>>> 
>>>> (when (and (file-remote-p file)
>>>>            (not browse-url-temp-file-name))
>>>>   (setq browse-url-temp-file-name (file-local-copy file)
>>>>         file browse-url-temp-file-name))
>>>> (browse-url (browse-url-file-url file))
>>>> 
>>>> perhaps because browse-url-temp-file-name is non-nil the second time?
>>>> But I don't know how the macOS "Connect to server" menu is invoked;
>>>> can you clarify that?
>>> 
>>> 
>>> I stepped through it and it seems the MacOS dialog window is triggered on line 822 of browse-url.el:
>>> 
>>> (setq file-name browse-url-temp-file-name)
>>> (write-region (point-min) (point-max) file-name nil 'no-message))
>>>      (browse-url-of-file file-name))))
>>> 
>>> more specifically here: (browse-url-of-file file-name)
>> 
>> Thanks, that was my guess.  I asked you to step through the code of
>> browse-url-of-file itself, for that reason.  (Let me know if you need
>> help with using Edebug to step into function calls like this.)  The
>> code snippet I show is from browse-url-of-file, and it specifically
>> tests whether the file is remote or not, so I think something is wrong
>> in that logic.
>> 
>> 
>> 
>> 

Message #20 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Milen Hristov <milen <at> andreshko.com>,
 Michael Albinus <michael.albinus <at> gmx.de>
Cc: 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second time
 in a row
Date: Sat, 05 Jul 2025 11:30:37 +0300

> From: Milen Hristov <milen <at> andreshko.com>
> Date: Sat, 28 Jun 2025 15:13:37 +0300
> Cc: 78830 <at> debbugs.gnu.org
> 
> Apologies, I think I misunderstood which function should I step through.
> 
> I’ve stepped in through browse-url-of-file now and I think I found a suspect:
> 
> on line 754 in: (browse-url (browse-url-file-url file))
> 
> `browse-url-file-url file` seems to be evaluated to `ftp://ssh/_path_to_the_remote_file`, which is the remote file path but with ftp:// protocol added for some reason at the beginning, whereas the first time when the function is triggered the evaluated url is file://_path_to_the_local_rendered_html i.e. the correct path to the local rendered html.

Thanks, I think we are close.

Michael, could you please help?  I see that browse-url-file-url could
prepend "ftp://" to the file name, but I don't understand the logic of
doing that.  Perhaps the regexps in the default value of
browse-url-filename-alist need some adjustments?

Message #23 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Milen Hristov <milen <at> andreshko.com>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second
 time in a row
Date: Mon, 07 Jul 2025 10:48:18 +0200

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

Eli Zaretskii <eliz <at> gnu.org> writes:

Hi Eli & Milen,

>> I’ve stepped in through browse-url-of-file now and I think I found a suspect:
>> 
>> on line 754 in: (browse-url (browse-url-file-url file))
>> 
>> `browse-url-file-url file` seems to be evaluated to
>> `ftp://ssh/_path_to_the_remote_file`, which is the remote file path
>> but with ftp:// protocol added for some reason at the beginning,
>> whereas the first time when the function is triggered the evaluated
>> url is file://_path_to_the_local_rendered_html i.e. the correct path
>> to the local rendered html.
>
> Thanks, I think we are close.
>
> Michael, could you please help?  I see that browse-url-file-url could
> prepend "ftp://" to the file name, but I don't understand the logic of
> doing that.  Perhaps the regexps in the default value of
> browse-url-filename-alist need some adjustments?

I could reproduce the problem locally. The problem is the inconsistent
handling of browse-url-temp-file-name. The appended patch (on top of
Emacs master, aka 31.0.50) fixes this for me.

Milen, do you have a chance to test it?

Best regards, Michael.

[Message part 2 (text/x-patch, attachment)]

Message #26 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Milen Hristov <milen <at> andreshko.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second time
 in a row
Date: Thu, 10 Jul 2025 00:01:01 +0300

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

Thank you, Michael. However, I’m struggling to find out how to apply this patch. Is it suppose to be applied only on the source of Emacs or can I “live patch” my instance on Mac OS? I found the target file in Applications/Emacs folder on MacOS but it’s .gz and the paths in the patch file you provided are different. 


> On 7 Jul 2025, at 11:48, Michael Albinus <michael.albinus <at> gmx.de> wrote:
> 
> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
> Hi Eli & Milen,
> 
>>> I’ve stepped in through browse-url-of-file now and I think I found a suspect:
>>> 
>>> on line 754 in: (browse-url (browse-url-file-url file))
>>> 
>>> `browse-url-file-url file` seems to be evaluated to
>>> `ftp://ssh/_path_to_the_remote_file`, which is the remote file path
>>> but with ftp:// protocol added for some reason at the beginning,
>>> whereas the first time when the function is triggered the evaluated
>>> url is file://_path_to_the_local_rendered_html i.e. the correct path
>>> to the local rendered html.
>> 
>> Thanks, I think we are close.
>> 
>> Michael, could you please help?  I see that browse-url-file-url could
>> prepend "ftp://" to the file name, but I don't understand the logic of
>> doing that.  Perhaps the regexps in the default value of
>> browse-url-filename-alist need some adjustments?
> 
> I could reproduce the problem locally. The problem is the inconsistent
> handling of browse-url-temp-file-name. The appended patch (on top of
> Emacs master, aka 31.0.50) fixes this for me.
> 
> Milen, do you have a chance to test it?
> 
> Best regards, Michael.
> 

[Mail Attachment (text/x-patch, attachment)]

[Message part 3 (text/plain, inline)]

Message #29 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Milen Hristov <milen <at> andreshko.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second
 time in a row
Date: Thu, 10 Jul 2025 09:11:06 +0200

Milen Hristov <milen <at> andreshko.com> writes:

Hi Milen,

> Thank you, Michael. However, I’m struggling to find out how to apply
> this patch. Is it suppose to be applied only on the source of Emacs or
> can I “live patch” my instance on Mac OS? I found the target file in
> Applications/Emacs folder on MacOS but it’s .gz and the paths in the
> patch file you provided are different.

browse-url.el is too different between Emacs 30 and 31; you cannot apply
the patch on top of Emacs 30.

What you could try is to use browse-url.el from Emacs 31 with your Emacs
30. Something like this:

- Download the recent broese-url.el from Emacs git repo.
  <https://cgit.git.savannah.gnu.org/cgit/emacs.git/plain/lisp/net/browse-url.el>.

- Apply the patch on top of it.

- Start Emacs koading this file, for example from ~/lisp:

# emacs -l ~/lisp/browse-url.el

Best regards, Michael.

Message #32 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Milen Hristov <milen <at> andreshko.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second time
 in a row
Date: Thu, 10 Jul 2025 16:25:35 +0300

Hi Michael,

I’ve applied the patch as per your instructions and loaded the patched browse-ulr.el in emacs with -l flag, however I don’t think the file overrides the original browse-url.el

The bug is still there and when I try to step through the function, edebug opens the original file in /Applications/Emacs.app/Contents/Resources/lisp/net/browse-url.el.gz , not the one I loaded with -l flag.

Is there a way to override the original?

Best regards,
Milen



> On 10 Jul 2025, at 10:11, Michael Albinus <michael.albinus <at> gmx.de> wrote:
> 
> Milen Hristov <milen <at> andreshko.com> writes:
> 
> Hi Milen,
> 
>> Thank you, Michael. However, I’m struggling to find out how to apply
>> this patch. Is it suppose to be applied only on the source of Emacs or
>> can I “live patch” my instance on Mac OS? I found the target file in
>> Applications/Emacs folder on MacOS but it’s .gz and the paths in the
>> patch file you provided are different.
> 
> browse-url.el is too different between Emacs 30 and 31; you cannot apply
> the patch on top of Emacs 30.
> 
> What you could try is to use browse-url.el from Emacs 31 with your Emacs
> 30. Something like this:
> 
> - Download the recent broese-url.el from Emacs git repo.
>  <https://cgit.git.savannah.gnu.org/cgit/emacs.git/plain/lisp/net/browse-url.el>.
> 
> - Apply the patch on top of it.
> 
> - Start Emacs koading this file, for example from ~/lisp:
> 
> # emacs -l ~/lisp/browse-url.el
> 
> Best regards, Michael.

Message #35 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Milen Hristov <milen <at> andreshko.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second
 time in a row
Date: Thu, 10 Jul 2025 15:33:42 +0200

Milen Hristov <milen <at> andreshko.com> writes:

> Hi Michael,

Hi Milen,

> I’ve applied the patch as per your instructions and loaded the patched
> browse-ulr.el in emacs with -l flag, however I don’t think the file
> overrides the original browse-url.el

Could you pls show how you did start Emacs from the shell?

> Best regards,
> Milen

Best regards, Michael.

Message #38 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Milen Hristov <milen <at> andreshko.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second time
 in a row
Date: Thu, 10 Jul 2025 16:36:58 +0300

Sure. The patched file is in ~/Downloads/lisp

From terminal I start it with:

emacs -l ~/Downloads/lisp/browse-url.el


> On 10 Jul 2025, at 16:33, Michael Albinus <michael.albinus <at> gmx.de> wrote:
> 
> Milen Hristov <milen <at> andreshko.com> writes:
> 
>> Hi Michael,
> 
> Hi Milen,
> 
>> I’ve applied the patch as per your instructions and loaded the patched
>> browse-ulr.el in emacs with -l flag, however I don’t think the file
>> overrides the original browse-url.el
> 
> Could you pls show how you did start Emacs from the shell?
> 
>> Best regards,
>> Milen
> 
> Best regards, Michael.

Message #41 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Milen Hristov <milen <at> andreshko.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second
 time in a row
Date: Thu, 10 Jul 2025 15:41:13 +0200

Milen Hristov <milen <at> andreshko.com> writes:

Hi Milen,

> Sure. The patched file is in ~/Downloads/lisp
>
> From terminal I start it with:
>
> emacs -l ~/Downloads/lisp/browse-url.el

Is the file really in ~/Downloads/lisp/? Perhaps, it is in ~/Downloads/?

What happens if you call

# emacs -Q -l ~/Downloads/lisp/browse-url.el

Is there an error message in *Messages* after starting Emacs like this?

Best regards, Michael.

Message #44 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Milen Hristov <milen <at> andreshko.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second time
 in a row
Date: Thu, 10 Jul 2025 16:45:08 +0300

Actually I just tried just opening the file in Emacs and doing ‘eval-buffer’ and the new file has overridden the original one.

Doing it like this, the patch now works fine and the bug disappeared!

As for the loading suggestions, there are no error messages only when i put -l flag.



> On 10 Jul 2025, at 16:41, Michael Albinus <michael.albinus <at> gmx.de> wrote:
> 
> Milen Hristov <milen <at> andreshko.com> writes:
> 
> Hi Milen,
> 
>> Sure. The patched file is in ~/Downloads/lisp
>> 
>> From terminal I start it with:
>> 
>> emacs -l ~/Downloads/lisp/browse-url.el
> 
> Is the file really in ~/Downloads/lisp/? Perhaps, it is in ~/Downloads/?
> 
> What happens if you call
> 
> # emacs -Q -l ~/Downloads/lisp/browse-url.el
> 
> Is there an error message in *Messages* after starting Emacs like this?
> 
> Best regards, Michael.

Message #47 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Milen Hristov <milen <at> andreshko.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second
 time in a row
Date: Thu, 10 Jul 2025 15:48:24 +0200

Milen Hristov <milen <at> andreshko.com> writes:

Hi Milen,

> Actually I just tried just opening the file in Emacs and doing ‘eval-buffer’ and the new file has overridden the original one.

> Doing it like this, the patch now works fine and the bug disappeared!

Good. The patch works :-)

> As for the loading suggestions, there are no error messages only when i put -l flag.

I cannot parse this sentence. Is there an error message, or not, when you
use the -l option?

Best regards, Michael.

Message #50 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Milen Hristov <milen <at> andreshko.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second time
 in a row
Date: Thu, 10 Jul 2025 16:55:56 +0300

Apologies, someone distracted me when I was writing LOL :)
No, there are no errors when I use -l flag. I started Emacs from the directory where the file is located to avoid any possible path problems. This is the only output:

emacs -l browse-url.el
2025-07-10 16:37:33.650 Emacs-arm64-11[70065:4215613] TSM AdjustCapsLockLEDForKeyTransitionHandling - _ISSetPhysicalKeyboardCapsLockLED Inhibit

Best regards, Milen

> 
>> As for the loading suggestions, there are no error messages only when i put -l flag.
> 
> I cannot parse this sentence. Is there an error message, or not, when you
> use the -l option?
> 
> Best regards, Michael.

Message #53 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Milen Hristov <milen <at> andreshko.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second
 time in a row
Date: Thu, 10 Jul 2025 16:05:10 +0200

Milen Hristov <milen <at> andreshko.com> writes:

Hi Milen,

> No, there are no errors when I use -l flag. I started Emacs from the directory where the file is located to avoid any possible path problems. This is the only output:
>
> emacs -l browse-url.el
> 2025-07-10 16:37:33.650 Emacs-arm64-11[70065:4215613] TSM AdjustCapsLockLEDForKeyTransitionHandling - _ISSetPhysicalKeyboardCapsLockLED Inhibit

I meant the *Messages* buffer from the started Emacs.

Could you try to start 

# emacs -Q -l browse-url.el

What does 'C-h f browse-url-of-buffer' tells you about the used file?

> Best regards, Milen
 
Best regards, Michael.

Message #56 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Milen Hristov <milen <at> andreshko.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second time
 in a row
Date: Thu, 10 Jul 2025 17:16:18 +0300

Hi Michael,

> 
> Could you try to start 
> 
> # emacs -Q -l browse-url.el

I started it like this.


> I meant the *Messages* buffer from the started Emacs.

This is the *Messages* buffer content:

For information about GNU Emacs and the GNU system, type C-h C-a.
Quit
Type q in help window to delete it.

Type q in help window to delete it.
uncompressing browse-url.el.gz...done
browse-url.el.gz has auto save data; consider M-x recover-this-file
uncompressing .!Applications!Emacs.app!Contents!Resources!lisp!net!browse-url.el.gz.~undo-tree~...done

> 
> What does 'C-h f browse-url-of-buffer' tells you about the used file?
> 

It shows the usual help:

browse-url-of-buffer is an autoloaded interactive byte-code-function
in ‘browse-url.el’.

(browse-url-of-buffer &optional BUFFER)

Use a web browser to display BUFFER.
See ‘browse-url’ for details.

Display the current buffer if BUFFER is nil.  Display only the
currently visible part of BUFFER (from a temporary file) if buffer is
narrowed.


When I click on the link to the file, it opens the original el.gz file.

Best regards, Milen

Message #59 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Milen Hristov <milen <at> andreshko.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second
 time in a row
Date: Thu, 10 Jul 2025 16:24:50 +0200

Milen Hristov <milen <at> andreshko.com> writes:

> Hi Michael,

Hi Milen,

>> I meant the *Messages* buffer from the started Emacs.
>
> This is the *Messages* buffer content:
>
> For information about GNU Emacs and the GNU system, type C-h C-a.
> Quit
> Type q in help window to delete it.
>
> Type q in help window to delete it.
> uncompressing browse-url.el.gz...done

This is a clear indication, that the original browse-url.el from Emacs
30 has used.

>> What does 'C-h f browse-url-of-buffer' tells you about the used file?
>
> It shows the usual help:
>
> browse-url-of-buffer is an autoloaded interactive byte-code-function
> in ‘browse-url.el’.

And this as well. Otherwise, it would show you the complete ‘/path/to/browse-url.el’.

> When I click on the link to the file, it opens the original el.gz file.

Sigh.

Please call Emacs like I have shown, as

# emacs -l /path/to/browse-url.el

> Best regards, Milen

Best regards, Michael.

Message #62 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Milen Hristov <milen <at> andreshko.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second time
 in a row
Date: Thu, 10 Jul 2025 17:38:08 +0300

Hi Michael,

I’ve started emacs with the full absolute path to the file:

emacs -l /Users/milen/Downloads/lisp/browse-url.el

and 'C-h f browse-url-of-buffer’ shows again the same as I wrote in my last message. It still loads the original file. Here’s *Messages* buffer:

For information about GNU Emacs and the GNU system, type C-h C-a.
Type q in help window to delete it.
uncompressing browse-url.el.gz...done
browse-url.el.gz has auto save data; consider M-x recover-this-file
uncompressing .!Applications!Emacs.app!Contents!Resources!lisp!net!browse-url.el.gz.~undo-tree~...done

It seems -l flag doesn’t work at all? It could be the specific build. I’m using one from https://emacsformacosx.com/


Best regards,
Milen

> On 10 Jul 2025, at 17:24, Michael Albinus <michael.albinus <at> gmx.de> wrote:
> 
> Milen Hristov <milen <at> andreshko.com> writes:
> 
>> Hi Michael,
> 
> Hi Milen,
> 
>>> I meant the *Messages* buffer from the started Emacs.
>> 
>> This is the *Messages* buffer content:
>> 
>> For information about GNU Emacs and the GNU system, type C-h C-a.
>> Quit
>> Type q in help window to delete it.
>> 
>> Type q in help window to delete it.
>> uncompressing browse-url.el.gz...done
> 
> This is a clear indication, that the original browse-url.el from Emacs
> 30 has used.
> 
>>> What does 'C-h f browse-url-of-buffer' tells you about the used file?
>> 
>> It shows the usual help:
>> 
>> browse-url-of-buffer is an autoloaded interactive byte-code-function
>> in ‘browse-url.el’.
> 
> And this as well. Otherwise, it would show you the complete ‘/path/to/browse-url.el’.
> 
>> When I click on the link to the file, it opens the original el.gz file.
> 
> Sigh.
> 
> Please call Emacs like I have shown, as
> 
> # emacs -l /path/to/browse-url.el
> 
>> Best regards, Milen
> 
> Best regards, Michael.

Message #65 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Milen Hristov <milen <at> andreshko.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second
 time in a row
Date: Thu, 10 Jul 2025 16:41:04 +0200

Milen Hristov <milen <at> andreshko.com> writes:

> Hi Michael,

Hi Milen,

> I’ve started emacs with the full absolute path to the file:
>
> emacs -l /Users/milen/Downloads/lisp/browse-url.el
>
> and 'C-h f browse-url-of-buffer’ shows again the same as I wrote in my last message. It still loads the original file. Here’s *Messages* buffer:
>
> For information about GNU Emacs and the GNU system, type C-h C-a.
> Type q in help window to delete it.
> uncompressing browse-url.el.gz...done
> browse-url.el.gz has auto save data; consider M-x recover-this-file
> uncompressing .!Applications!Emacs.app!Contents!Resources!lisp!net!browse-url.el.gz.~undo-tree~...done
>
> It seems -l flag doesn’t work at all? It could be the specific build. I’m using one from https://emacsformacosx.com/

Have you tried to start 'emacs -Q -l ...'?

> Best regards,
> Milen

Best regards, Michael.

Message #68 received at 78830 <at> debbugs.gnu.org (full text, mbox):

From: Milen Hristov <milen <at> andreshko.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830 <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second time
 in a row
Date: Thu, 10 Jul 2025 17:55:15 +0300

Hi Michael,

I think I found the problem.

`emacs` is an alias to the actual binary on MacOS:

which emacs
emacs: aliased to $(/Applications/Emacs.app/Contents/MacOS/Emacs "$@“)

When calling the alias it doesn’t accept the cli parameters for some reason. If I call the actual binary with the flags it works perfectly  - it doesn’t load my config and loads the patched .el file just fine:

browse-url-of-buffer is an autoloaded interactive interpreted-function
in ‘~/Downloads/lisp/browse-url.el’.

(browse-url-of-buffer &optional BUFFER)

Use a web browser to display BUFFER.
See ‘browse-url’ for details.

Display the current buffer if BUFFER is nil.  Display only the
currently visible part of BUFFER (from a temporary file) if buffer is
narrowed.


Best regards,
Milen


> On 10 Jul 2025, at 17:41, Michael Albinus <michael.albinus <at> gmx.de> wrote:
> 
> Milen Hristov <milen <at> andreshko.com> writes:
> 
>> Hi Michael,
> 
> Hi Milen,
> 
>> I’ve started emacs with the full absolute path to the file:
>> 
>> emacs -l /Users/milen/Downloads/lisp/browse-url.el
>> 
>> and 'C-h f browse-url-of-buffer’ shows again the same as I wrote in my last message. It still loads the original file. Here’s *Messages* buffer:
>> 
>> For information about GNU Emacs and the GNU system, type C-h C-a.
>> Type q in help window to delete it.
>> uncompressing browse-url.el.gz...done
>> browse-url.el.gz has auto save data; consider M-x recover-this-file
>> uncompressing .!Applications!Emacs.app!Contents!Resources!lisp!net!browse-url.el.gz.~undo-tree~...done
>> 
>> It seems -l flag doesn’t work at all? It could be the specific build. I’m using one from https://emacsformacosx.com/
> 
> Have you tried to start 'emacs -Q -l ...'?
> 
>> Best regards,
>> Milen
> 
> Best regards, Michael.

Message #73 received at 78830-done <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Milen Hristov <milen <at> andreshko.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 78830-done <at> debbugs.gnu.org
Subject: Re: bug#78830: 30.1; M- browse-url-of-buffer doesn't work second
 time in a row
Date: Thu, 10 Jul 2025 17:27:43 +0200

Version: 31.1

Milen Hristov <milen <at> andreshko.com> writes:

> Hi Michael,

Hi Milen,

> I think I found the problem.
>
> `emacs` is an alias to the actual binary on MacOS:
>
> which emacs
> emacs: aliased to $(/Applications/Emacs.app/Contents/MacOS/Emacs "$@“)

I cannot comment seriously; no idea what macOS does.

> When calling the alias it doesn’t accept the cli parameters for some reason. If I call the actual binary with the flags it works perfectly  - it doesn’t load my config and loads the patched .el file just fine:
>
> browse-url-of-buffer is an autoloaded interactive interpreted-function
> in ‘~/Downloads/lisp/browse-url.el’.
>
> (browse-url-of-buffer &optional BUFFER)
>
> Use a web browser to display BUFFER.
> See ‘browse-url’ for details.
>
> Display the current buffer if BUFFER is nil.  Display only the
> currently visible part of BUFFER (from a temporary file) if buffer is
> narrowed.

Great, so we're done. I've pushed the patch to the Emacs repository,
closing the bug therefore.

> Best regards,
> Milen

Best regards, Michael.

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