i18n: Add function ngettext for pluralization.

* lisp/international/mule-cmds.el (ngettext): New function.
https://lists.gnu.org/archive/html/emacs-devel/2019-03/msg00586.html

* lisp/replace.el (flush-lines, how-many, occur-1, occur-engine)
(perform-replace): Use ngettext.

* lisp/progmodes/grep.el (grep-exit-message): Use ngettext.
(grep-mode-font-lock-keywords): Match both singular and plural form
of "matches".

1 files changed, 5 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index cb485992b8d..bbba59c5490 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1364,6 +1364,11 @@ Now, such rx expressions generate an error.
 
 * Lisp Changes in Emacs 27.1
 
+** i18n (internationalization)
+
+*** ngettext can be used now to return the right plural form
+according to the given numeric value.
+
 +++
 ** inhibit-null-byte-detection is renamed to inhibit-nul-byte-detection