bug#71343: 30.0.50; TTY frame doesn't automatically redisplay itself after having closed another frame

[Eli Zaretskii]

> From: Daniel Clemente <n142857@gmail.com>
> Date: Mon, 3 Jun 2024 15:33:16 +0000
> 
> 1. Launch emacs --daemon -Q
> 2. Using my tiling window manager "wmii", I divide the screen in a
> left part and a right part. Each one has other non-Emacs windows
> 3. In the left side, I press a key to launch a terminal with TTY
> emacs. I use a command like this: urxvtcd -e emacsclient -c &
> 4. I move focus to the right side, I launch another
> terminal+emacsclient with the same command
> 5. Sanity check; verifying that everything works: I move to the left
> terminal and press wmii keys to make the terminal wider or thinner. It
> works as expected, it redisplays; Emacs uses all available space
> inside the X window
> 6. Now I go to the right side. I press a key to kill the terminal
> running emacsclient. Now only the terminal in the left side remains
> 7. I move to the left side (pressing a wmii key) and I press the wmii
> keys to make the terminal wider or thinner (same as step 5). wmii
> obeys, the X windows change size as expected.
> 8. However, the Emacs TTY frame isn't redisplayed: if I made it wider,
> the new area at the right of the frame is shown in black (it sometimes
> shows garbage from previous attempts). The mode line doesn't extend to
> the right. If I make it thinner, the text isn't readjusted to the new
> line length. Etc. The cursor keeps blinking.
> 9. I can keep circulating through other X windows and come back to
> this X window, and try to resize it again. It still doesn't redisplay.
> Pressing Ctrl also doesn't redisplay it
> 10. Only when I press a non-modifier key (e.g. right arrow) or I move
> the mouse, it redisplays and starts using the whole X window
> 
> 
> Note that step 6 is essential. This issue only appears immediately
> after having killed another emacslient. It doesn't happen e.g. after
> killing another type of X window. Or after having shuffled the X
> windows (moving the terminal around, left/right, without killing it).
> It's just after killing a frame.

What do you mean by "kill the terminal running emacsclient" in step 6?

Also, since you mention the window manager, does it mean the problem
doesn't happen with other window managers, if you start 2 emacsclient
sessions with the same daemon and then "kill" (whatever that means)
one of these two sessions?