bug#38382: 26.3; Message body not displayed after editing in rmail-mode

bug#38382: 26.3; Message body not displayed after editing in rmail-mode

[Ed Sabol via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Steps to reproduce:
1. Send yourself a text/plain email that has no body and no MIME attachments.
2. In Rmail, retrieve the email, adding it to your Rmail file.
3. Hit "e" to edit the message that has no body.
4. Add a body to the message.
5. Hit C-c C-c to finish editing. The body text you just added disappears!

If you save the Rmail file, kill the buffer, and re-open the Rmail file, it
properly displays the added body of the message, so I think it's just an
issue with how the message is displayed. Maybe it needs to be re-parsed after
editing?


In GNU Emacs 26.3 (build 2, x86_64-pc-linux-gnu, X toolkit)
 of 2019-11-19 built on heasarcdev
Windowing system distributor 'Scientific Linux', version 11.0.11704000
System Description:	Scientific Linux release 6.10 (Carbon)

Recent messages:
Computing summary lines...done
3 new messages read
Computing summary lines...done
Expunging deleted messages...done
Computing summary lines...done
Saving file /Home/lhea2/sabol/Mail/RMAIL...
Wrote /Home/lhea2/sabol/Mail/RMAIL [2 times]
Computing summary lines...done
command-execute: Buffer is read-only: #<buffer RMAIL-summary>
scroll-down-one-line: Beginning of buffer

Configured using:
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Configured features:
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Important settings:
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Major mode: Emacs-Lisp

Minor modes in effect:
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Load-path shadows:
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/Home/lhea2/sabol/.emacs.d/elpa/mmm-mode-0.5.7/mmm-region hides /software/usr/contrib/share/emacs/site-lisp/mmm-region
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bug#38382: 26.3; Message body not displayed after editing in rmail-mode

[Eli Zaretskii]

> Date: Mon, 25 Nov 2019 20:30:23 -0500 (EST)
> From: Ed Sabol via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> 1. Send yourself a text/plain email that has no body and no MIME attachments.
> 2. In Rmail, retrieve the email, adding it to your Rmail file.
> 3. Hit "e" to edit the message that has no body.
> 4. Add a body to the message.
> 5. Hit C-c C-c to finish editing. The body text you just added disappears!

I cannot reproduce this.  I see the added body after "C-c C-c" (with
the current master branch of Emacs).

How did you "add the body", precisely?  Please show the exact text you
typed between 'e' and 'C-c C-c'.

bug#38382: 26.3; Message body not displayed after editing in rmail-mode

[Edward J. Sabol via Bug reports for GNU Emacs, the Swiss army knife of text editors]

>> 1. Send yourself a text/plain email that has no body and no MIME attachments.
>> 2. In Rmail, retrieve the email, adding it to your Rmail file.
>> 3. Hit "e" to edit the message that has no body.
>> 4. Add a body to the message.
>> 5. Hit C-c C-c to finish editing. The body text you just added disappears!

Eli Zaretskii replied:
> I cannot reproduce this.  I see the added body after "C-c C-c" (with
> the current master branch of Emacs).
>
> How did you "add the body", precisely?  Please show the exact text you
> typed between 'e' and 'C-c C-c'.

(Sorry it has taken me a month to reply. December was hectic with all the
holidays.)

Well, maybe this is fixed in the current master branch of Emacs, but I can
reproduce it with Emacs 26.3 started with 'emacs -Q'.

After typing "e" in eithre the rmail-summary buffer or the rmail buffer, the
exact keypresses I type are:

M->

This is a test.

RET

C-c C-c

According to describe-key-briefly, M-> runs the command end-of-buffer when
editing a message in my rmail buffer. After hitting 'C-c C-c', boom goes the
dynamite, the text "This is a test." just disappears. If I kill the rmail
buffer and re-open it, I see "This is a test." So it's there. It's just not
visible after I finish editing. So I guess you could say it's cosmetic only,
but it's very confusing. Again, if the message already has a body, there is
no issue with editing it. I only see this problem with the message has no
body to start with and I add one. And "This is a test" can be any text
really.

Thanks,
Ed

bug#38382: 26.3; Message body not displayed after editing in rmail-mode

[Eli Zaretskii]

> From: "Edward J. Sabol" <edward.j.sabol@nasa.gov>
> CC: 38382@debbugs.gnu.org
> Date: Fri, 10 Jan 2020 17:40:09 -0500 (EST)
> 
> > I cannot reproduce this.  I see the added body after "C-c C-c" (with
> > the current master branch of Emacs).
> >
> > How did you "add the body", precisely?  Please show the exact text you
> > typed between 'e' and 'C-c C-c'.
> 
> (Sorry it has taken me a month to reply. December was hectic with all the
> holidays.)
> 
> Well, maybe this is fixed in the current master branch of Emacs, but I can
> reproduce it with Emacs 26.3 started with 'emacs -Q'.
> 
> After typing "e" in eithre the rmail-summary buffer or the rmail buffer, the
> exact keypresses I type are:
> 
> M->
> 
> This is a test.
> 
> RET
> 
> C-c C-c

I did exactly the same, using Emacs 26.3, and I cannot reproduce the
problem.  I do see the added body after "C-c C-c".  So, however
strange, there's something else at work here.

Just to be sure: this happens for you in "emacs -Q" as well, does it?

bug#38382: 26.3; Message body not displayed after editing in rmail-mode

[Edward J. Sabol via Bug reports for GNU Emacs, the Swiss army knife of text editors]

> Just to be sure: this happens for you in "emacs -Q" as well, does it?

Yes. And I reconfirmed that right before I emailed yesterday. Do you have
messages before and after the message with no body in the Rmail file? My
testing does. I haven't actually tested it with it being the last message.
Maybe that's the difference?

Thanks,
Ed

bug#38382: 26.3; Message body not displayed after editing in rmail-mode

[Eli Zaretskii]

> From: "Edward J. Sabol" <edward.j.sabol@nasa.gov>
> CC: 38382@debbugs.gnu.org
> Date: Sat, 11 Jan 2020 12:55:48 -0500 (EST)
> 
> > Just to be sure: this happens for you in "emacs -Q" as well, does it?
> 
> Yes. And I reconfirmed that right before I emailed yesterday. Do you have
> messages before and after the message with no body in the Rmail file? My
> testing does. I haven't actually tested it with it being the last message.
> Maybe that's the difference?

Maybe.  In my case it was the last message in the mbox file.

bug#38382: 26.3; Message body not displayed after editing in rmail-mode

[Edward J. Sabol via Bug reports for GNU Emacs, the Swiss army knife of text editors]

>>> Just to be sure: this happens for you in "emacs -Q" as well, does it?
>> 
>> Yes. And I reconfirmed that right before I emailed yesterday. Do you have
>> messages before and after the message with no body in the Rmail file? My
>> testing does. I haven't actually tested it with it being the last message.
>> Maybe that's the difference?
>
> Maybe.  In my case it was the last message in the mbox file.

Well, I just tested it with "emacs -Q" and an inbox in which the only
message in the mbox file had no body, and the body I added when editing still
disappeared.

So, since you can't reproduce it, I think we can assume it's already fixed.
Feel free to close this issue.

Thanks,
Ed

bug#38382: 26.3; Message body not displayed after editing in rmail-mode

[Eli Zaretskii]

> From: "Edward J. Sabol" <edward.j.sabol@nasa.gov>
> CC: 38382@debbugs.gnu.org
> Date: Mon, 13 Jan 2020 18:45:16 -0500 (EST)
> 
> > Maybe.  In my case it was the last message in the mbox file.
> 
> Well, I just tested it with "emacs -Q" and an inbox in which the only
> message in the mbox file had no body, and the body I added when editing still
> disappeared.
> 
> So, since you can't reproduce it, I think we can assume it's already fixed.
> Feel free to close this issue.

Thanks, done.