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bug#50112: 28.0.50; ediff help frame does not display text
From: |
David Phillips |
Subject: |
bug#50112: 28.0.50; ediff help frame does not display text |
Date: |
Fri, 20 Aug 2021 11:44:08 -0400 |
I ran /Applications/Emacs.app/Contents/MacOS/Emacs -Q
Loaded two files
Ran "ediff-buffers”
Typed ‘?’ to expand the the help frame and then switched back to the main
frame. After running the elisp you provided,
*Messages* contains:
--------
For information about GNU Emacs and the GNU system, type C-h C-a.
Making completion list...
Buffer A: Processing difference region 0 of 15
Buffer A: Processing difference region 10 of 15
Buffer B: Processing difference region 0 of 15
Buffer B: Processing difference region 10 of 15
Processing difference regions ... done
nil
Mark set
----------
The nil comes from executing the elisp to copy the buffer in the help frame to
*foo* and I’d guess is related to things not working correctly. The "Mark set"
was me making sure I had the whole *Messages* buffer.
And *foo* contains:
-----------
*Ediff Control Panel*
Move around | Toggle features | Manipulate
=====================|===========================|=============================
p,DEL -previous diff | | -vert/horiz split |a/b -copy A/B's region to B/A
n,SPC -next diff | h -highlighting | rx -restore buf X's old diff
j -jump to diff | @ -auto-refinement | * -refine current region
gx -goto X's point| ## -ignore whitespace | ! -update diff regions
C-l -recenter | #c -ignore case |
v/V -scroll up/dn | #f/#h -focus/hide regions | wx -save buf X
</> -scroll lt/rt | X -read-only in buf X | wd -save diff output
~ -swap variants | m -wide display |
=====================|===========================|=============================
R -show registry | = -compare regions | M -show session group
D -diff output | E -browse Ediff manual| G -send bug report
i -status info | ? -help off | z/q -suspend/quit
-------------------------------------------------------------------------------
For help on a specific command: Click Button 2 over it; or
Put the cursor over it and type RET.
------------
David
> On Aug 20, 2021, at 11:34 AM, martin rudalics <rudalics@gmx.at> wrote:
>
> > I do have two frames (and the help frame has no content). There is a
> > buffer named *Ediff Control Panel* with the help text in it, but it
> > isn’t displayed in the frame labeled Ediff. When I run ediff-buffers,
> > hit ‘?’, switch back to the main frame, and evaluate the elisp you
> > sent, I get ’nil’ in the mini buffer and the buffer *foo* has the help
> > text in it. However, the help frame is still empty. I’m trying to
> > understand what this means. It seems like the frame has the right
> > buffer assigned to it but that it is in some weird mode so that it
> > isn’t being rendered properly.
>
> Is *Ediff Control Panel* the first line of *foo*? What does *Messages*
> show? Here it contains the four lines
>
> Buffer A: Processing difference region 0 of 1
> Buffer B: Processing difference region 0 of 1
> Processing difference regions ... done
> #<buffer *Ediff Control Panel*>
>
> martin
>