consult-focus-lines can't get the full file back after revert-buffer-quick

[zealotrush]

The bug could be reproduced in emacs -Q with a plain text file.

1. Create a text file with a few lines, e.g.,

   foo
   bar
   foobar

2. M-x consult-focus-lines, type foo, press RET. Now the buffer only shows the matching lines, and a FOCUS indicator shows in the mode line.

3. M-x revert-buffer-quick (C-x x g). The FOCUS indicator disappears.

4. Try to bring back the original content by either C-u M-x consult-focus-lines or M-x consult-focus-lines and press RET right away. Neither does anything.

The only way I found to get the original content back is to kill the buffer and reopen the file.

A few more notes.

• It also happens with .org files.
• I could not reproduce it with a .md file. In that case, revert-buffer-quick restores the original content immediately.

Environment

• emacs -Q, Emacs 32.0.50
• Consult 3.7 (3a2441d)
• macOS Tahoe 26.6.2

[minad]

Good point, fixed in 7d7f777.