* lisp/isearch.el: C-s C-u M-y reads a string from the kill-ring minibuffer

* lisp/isearch.el (isearch-yank-from-kill-ring): New command
with code moved from isearch-yank-pop.
(isearch-yank-pop): Use isearch-yank-from-kill-ring.
(isearch-yank-pop-only): Add optional arg, and call
isearch-yank-from-kill-ring when the prefix arg is C-u.
https://lists.gnu.org/archive/html/emacs-devel/2021-01/msg00089.html
2 jobs for master in 40 minutes and 11 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #10099
test-filenotify-gio

00:32:03

passed #10100
test-gnustep

00:40:11

 
Name Stage Failure
failed
test-filenotify-gio Test

2 skipped results:
SKIPPED file-notify-test10-sufficient-resources
SKIPPED file-notify-test10-sufficient-resources-remote

make[1]: Leaving directory '/builds/emacs/emacs/test'
make: Leaving directory '/builds/emacs/emacs/test'
Cleaning up file based variables
ERROR: Job failed: exit code 1