bug#50842: Fwd: bug#50842: 28.0.50; problem with fill-paragraph

[No Wayman <iarchivedmywholelife@gmail.com>]

Apologies. I used the "Reply" button on the bug archive page and 
didn't realize it would just reply to Lars.
I hope I'm forwarding this to the right address so it can be seen 
by all in the thread.

> Ah, that's the missing detail.

 Apologies if this is an unwelcome intrusion, but I'm currently 
 working on a package
 to prevent this type of confusion during bug reproduction:

 https://www.github.com/progfolio/yodel


 The basic idea is to provide macros which make declaring a 
 reproduction case easier.
 It runs the test and provides a formatted report which others can 
 run and compare results.
 The reports can be re-formatted easily after they've been run.
 Yodel currently supports github markdown, reddit markdown, Org 
 syntax, and can easily be extended to support other formats.

 As a case study, I wrote a test for this bug.
 The yodel-file macro removes the ambiguity of "Copy this into a 
 buffer, do this with point here, etc".
 The yodel macro runs the test locally in a temporary, clean Emacs 
 environment, and presents the formatted report.
 Here's the resultant report in Org syntax:


 * YODEL REPORT [2021-09-28 11:12:45]

 #+begin_src emacs-lisp :lexical t :results silent
 (yodel
   :post*
   (yodel-file
     :point "|"
     :with*
     "From: xxx
 To: xxx
 Subject: xxx

 You wrote:
> | bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla 
> bla bla bla bla bla
>           bla bla bla bla bla bla bla bla bla bla bla bla bla 
>           bla bla bla bla bla
>           bla bla bla bla bla bla bla bla bla bla bla bla bla 
>           bla bla bla bla bla     "
     :then*
     (message-mode)
     (fill-paragraph)
     (print
      (buffer-substring-no-properties
       (point-min)
       (point-max)))))

 #+end_src


 ** STDOUT:

 #+begin_src emacs-lisp :lexical t :results silent
 "From: xxx
 To: xxx
 Subject: xxx
 --text follows this line--
 You wrote:

> bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla 
> bla
 bla bla bla > bla bla bla bla bla bla bla bla bla bla bla bla bla 
 bla
 bla bla bla bla > bla bla bla bla bla bla bla bla bla bla bla bla 
 bla
 bla bla bla bla bla"
 #+end_src

 ** Environment

 - =emacs version=: GNU Emacs 28.0.50 (build 1, 
   x86_64-pc-linux-gnu, X toolkit, cairo version 1.17.4, Xaw3d 
   scroll bars)
  of 2021-09-23
 - =system type=: gnu/linux



 Just food for thought on how we could better approach reproducing 
 bugs.

 Thanks,
 Nick