[nautilus] file-undo-operations: add plural support for strings

[Răzvan-Mihai Chițu <razvanchitu src gnome org>]

commit c81d968fa85ecc62d04d9945a54bc6cd027e7476
Author: Razvan Chitu <razvan ch95 gmail com>
Date:   Tue Aug 23 13:27:25 2016 +0300

    file-undo-operations: add plural support for strings
    
    The compression and extraction undo / redo strings lacked plural support.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=770270

 src/nautilus-file-undo-operations.c |   13 ++++++++++---
 1 files changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/src/nautilus-file-undo-operations.c b/src/nautilus-file-undo-operations.c
index 9e95310..b499922 100644
--- a/src/nautilus-file-undo-operations.c
+++ b/src/nautilus-file-undo-operations.c
@@ -1742,7 +1742,9 @@ extract_strings_func (NautilusFileUndoInfo  *info,
 
                 *undo_description = g_strdup_printf (_("Delete '%s'"), name);
         } else {
-                *undo_description = g_strdup_printf (_("Delete %d extracted files"),
+                *undo_description = g_strdup_printf (ngettext ("Delete %d extracted file",
+                                                               "Delete %d extracted files",
+                                                               total_outputs),
                                                      total_outputs);
         }
 
@@ -1755,7 +1757,9 @@ extract_strings_func (NautilusFileUndoInfo  *info,
 
                 *undo_description = g_strdup_printf (_("Extract '%s'"), name);
         } else {
-                *undo_description = g_strdup_printf (_("Extract %d files"),
+                *undo_description = g_strdup_printf (ngettext ("Extract %d file",
+                                                               "Extract %d files",
+                                                               total_sources),
                                                      total_sources);
         }
 }
@@ -1901,7 +1905,10 @@ compress_strings_func (NautilusFileUndoInfo  *info,
 
                 *redo_description = g_strdup_printf (_("Compress '%s'"), source_name);
         } else {
-                *redo_description = g_strdup_printf (_("Compress '%d' files"), sources_count);
+                *redo_description = g_strdup_printf (ngettext ("Compress %d file",
+                                                               "Compress %d files",
+                                                               sources_count),
+                                                     sources_count);
         }
 
         *undo_label = g_strdup (_("_Undo Compress"));