[nautilus] file-operations: fix plurals translation

[Carlos Soriano Sánchez <csoriano src gnome org>]

commit 13bde5bd37b3860f7566cf752bbd5cb80f12f863
Author: Carlos Soriano <csoriano gnome org>
Date:   Tue Sep 1 17:14:39 2015 +0200

    file-operations: fix plurals translation
    
    We were doing it elsewhere except here.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=754322

 libnautilus-private/nautilus-file-operations.c |   20 +++++++++++++++++---
 1 files changed, 17 insertions(+), 3 deletions(-)
---
diff --git a/libnautilus-private/nautilus-file-operations.c b/libnautilus-private/nautilus-file-operations.c
index 756c720..487a1e3 100644
--- a/libnautilus-private/nautilus-file-operations.c
+++ b/libnautilus-private/nautilus-file-operations.c
@@ -1923,17 +1923,31 @@ report_trash_progress (CommonJob    *job,
                 }
        } else {
                 if (files_left > 0) {
+                        gchar *time_left_message;
+                        gchar *files_per_second_message;
+                        gchar *concat_detail;
+
                        /* To translators: %T will expand to a time duration like "2 minutes".
                          * So the whole thing will be something like "1 / 5 -- 2 hours left (4 files/sec)"
                         *
                         * The singular/plural form will be used depending on the remaining time (i.e. the %T 
argument).
                         */
-                       details = f (ngettext ("%'d / %'d \xE2\x80\x94 %T left (%d files/sec)",
-                                              "%'d / %'d \xE2\x80\x94 %T left (%d files/sec)",
-                                              seconds_count_format_time_units (remaining_time)),
+                        time_left_message = ngettext ("%'d / %'d \xE2\x80\x94 %T left",
+                                                     "%'d / %'d \xE2\x80\x94 %T left",
+                                                     seconds_count_format_time_units (remaining_time));
+                        files_per_second_message = ngettext ("(%d file/sec)",
+                                                            "(%d files/sec)",
+                                                              (int) transfer_rate + 0.5);
+                        concat_detail = g_strconcat (time_left_message, files_per_second_message, NULL);
+
+                       details = f (concat_detail,
                                      transfer_info->num_files + 1, source_info->num_files,
                                      remaining_time,
                                      (int) transfer_rate + 0.5);
+
+                        g_free (time_left_message);
+                        g_free (files_per_second_message);
+                        g_free (concat_detail);
                 } else {
                         /* To translators: %'d is the number of files completed for the operation,
                          * so it will be something like 2/14. */