* lisp/international/mule-cmds.el (ngettext): Move to editfns.c.

* src/editfns.c (Fngettext): Move from mule-cmds.el and use
gettext's ngettext when available.

lisp/international/mule-cmds.el

@@ -2430,7 +2430,7 @@ See `set-language-info-alist' for use in programs."
     ("ind" . "Latin-1") ; MS-Windows Indonesian
     ("sme" . "UTF-8") ; MS-Windows Northern Sami (Norway)
     ("smf" . "UTF-8") ; MS-Windows Northern Sami (Sweden)
-    ("smg" . "ITF-8") ; MS-Windows Northern Sami (Finland)
+    ("smg" . "UTF-8") ; MS-Windows Northern Sami (Finland)
     ("kdi" "Kannada" utf-8) ; MS-Windows Kannada
     ("mar" "Devanagari" utf-8) ; MS-Windows Marathi
     ("khm" "Khmer" utf-8) ; MS-Windows Khmer
@@ -2798,20 +2798,6 @@ See also `locale-charset-language-names', `locale-language-names',
 		      'a4)))))))
   nil)
 
-;;; i18n (internationalization)
-
-(defun ngettext (msgid msgid_plural n)
-  "Return the plural form of the translation of the string.
-This function is similar to the `gettext' function as it finds the message
-catalogs in the same way.  But it takes two extra arguments.  The MSGID
-parameter must contain the singular form of the string to be converted.
-It is also used as the key for the search in the catalog.
-The MSGID_PLURAL parameter is the plural form.  The parameter N is used
-to determine the plural form.  If no message catalog is found MSGID is
-returned if N is equal to 1, otherwise MSGID_PLURAL."
-  (if (= n 1) msgid msgid_plural))
-
-
 ;;; Character property
 
 (put 'char-code-property-table 'char-table-extra-slots 5)

src/editfns.c

@@ -53,6 +53,12 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 #include "window.h"
 #include "blockinput.h"
 
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "gettext.h"
+#endif
+
 static void update_buffer_properties (ptrdiff_t, ptrdiff_t);
 static Lisp_Object styled_format (ptrdiff_t, Lisp_Object *, bool);
 
@@ -2836,6 +2842,35 @@ usage: (save-restriction &rest BODY)  */)
   return unbind_to (count, val);
 }
 
+/* i18n (internationalization).  */
+
+DEFUN ("ngettext", Fngettext, Sngettext, 3, 3, 0,
+       doc: /* Return the plural form of the translation of the string.
+This function is similar to the `gettext' function as it finds the message
+catalogs in the same way.  But it takes two extra arguments.  The MSGID
+parameter must contain the singular form of the string to be converted.
+It is also used as the key for the search in the catalog.
+The MSGID_PLURAL parameter is the plural form.  The parameter N is used
+to determine the plural form.  If no message catalog is found MSGID is
+returned if N is equal to 1, otherwise MSGID_PLURAL.  */)
+  (Lisp_Object msgid, Lisp_Object msgid_plural, Lisp_Object n)
+{
+  CHECK_STRING (msgid);
+  CHECK_STRING (msgid_plural);
+  CHECK_FIXNUM (n);
+
+#ifdef _LIBGETTEXT_H
+  return build_string (ngettext (SSDATA (msgid),
+                                 SSDATA (msgid_plural),
+                                 XFIXNUM (n)));
+#else
+  if (XFIXNUM (n) == 1)
+    return msgid;
+  else
+    return msgid_plural;
+#endif
+}
+
 DEFUN ("message", Fmessage, Smessage, 1, MANY, 0,
        doc: /* Display a message at the bottom of the screen.
 The message also goes into the `*Messages*' buffer, if `message-log-max'
@@ -4554,6 +4589,8 @@ it to be non-nil.  */);
   defsubr (&Sinsert_char);
   defsubr (&Sinsert_byte);
 
+  defsubr (&Sngettext);
+
   defsubr (&Suser_login_name);
   defsubr (&Sgroup_name);
   defsubr (&Suser_real_login_name);