[gnome-text-editor] savechangesdialog: use gettext plurality

[Christian Hergert <chergert src gnome org>]

commit 1517377e3fb48d128ae05d9201c656c9bec73c64
Author: Christian Hergert <chergert redhat com>
Date:   Tue Aug 10 12:29:27 2021 -0700

    savechangesdialog: use gettext plurality

 src/editor-save-changes-dialog.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/src/editor-save-changes-dialog.c b/src/editor-save-changes-dialog.c
index 929be9d..0e7b78c 100644
--- a/src/editor-save-changes-dialog.c
+++ b/src/editor-save-changes-dialog.c
@@ -239,6 +239,7 @@ _editor_save_changes_dialog_new (GtkWindow *parent,
                                  GPtrArray *pages)
 {
   g_autoptr(GArray) requests = NULL;
+  const char *discard_label;
   PangoAttrList *smaller;
   GtkWidget *dialog;
   GtkWidget *group;
@@ -252,6 +253,8 @@ _editor_save_changes_dialog_new (GtkWindow *parent,
   requests = g_array_new (FALSE, FALSE, sizeof (SaveRequest));
   g_array_set_clear_func (requests, save_request_clear);
 
+  discard_label = g_dngettext (GETTEXT_PACKAGE, _("Discard"), _("Discard All"), pages->len);
+
   dialog = gtk_message_dialog_new (parent,
                                    GTK_DIALOG_MODAL | GTK_DIALOG_USE_HEADER_BAR,
                                    GTK_MESSAGE_QUESTION,
@@ -261,7 +264,7 @@ _editor_save_changes_dialog_new (GtkWindow *parent,
                                             _("Open documents contain unsaved changes. Changes which are not 
saved will be permanently lost."));
   gtk_dialog_add_buttons (GTK_DIALOG (dialog),
                           _("_Cancel"), GTK_RESPONSE_CANCEL,
-                          _("_Discard All"), GTK_RESPONSE_NO,
+                          discard_label, GTK_RESPONSE_NO,
                           _("_Save"), GTK_RESPONSE_YES,
                           NULL);