New var write-region-verbose, default nil

By popular demand, write-region char counts are now off by default
(Bug#26796).
* src/fileio.c (write-region-verbose): New Lisp var.
(write_region): Output char count only if the var is non-nil.
* doc/emacs/files.texi (Misc File Ops), etc/NEWS: Document this.

1 files changed, 4 insertions, 3 deletions

diff --git a/doc/emacs/files.texi b/doc/emacs/files.texi
index bc977b72c17..d36fe6541ed 100644
--- a/doc/emacs/files.texi
+++ b/doc/emacs/files.texi
@@ -1657,9 +1657,10 @@ similar to the @kbd{M-x find-file-literally} command
 copies the contents of the region into the specified file.  @kbd{M-x
 append-to-file} adds the text of the region to the end of the
 specified file.  @xref{Accumulating Text}.  When called interactively,
-these commands will print a message in the echo area giving the name
-of the file affected as well as the number of characters which were
-added.  The variable @code{write-region-inhibit-fsync} applies to
+these commands print a message in the echo area giving the name
+of the file affected; if the variable @code{write-region-verbose} is
+non-nil the message also reports the number of characters written.
+The variable @code{write-region-inhibit-fsync} applies to
 these commands, as well as saving files; see @ref{Customize Save}.
 
 @findex set-file-modes