* lisp/replace.el (flush-lines): Return the number of deleted lines.

When called interactively, also print the number. (Bug#34520)

* doc/emacs/search.texi (Other Repeating Search): Update
flush-lines that prints the number of deleted lines.

1 files changed, 7 insertions, 5 deletions

diff --git a/doc/emacs/search.texi b/doc/emacs/search.texi
index 25f0cc4183e..761fe929ae5 100644
--- a/doc/emacs/search.texi
+++ b/doc/emacs/search.texi
@@ -1872,11 +1872,13 @@ region instead.
 @findex flush-lines
 @item M-x flush-lines
 Prompt for a regexp, and delete each line that contains a match for
-it, operating on the text after point.  This command deletes the
-current line if it contains a match starting after point.  If the
-region is active, it operates on the region instead; if a line
-partially contained in the region contains a match entirely contained
-in the region, it is deleted.
+it, operating on the text after point.  When the command finishes,
+it prints the number of deleted matching lines.
+
+This command deletes the current line if it contains a match starting
+after point.  If the region is active, it operates on the region
+instead; if a line partially contained in the region contains a match
+entirely contained in the region, it is deleted.
 
 If a match is split across lines, @code{flush-lines} deletes all those
 lines.  It deletes the lines before starting to look for the next