[nautilus] file-operations: show needed space as a secondary message

[Cosimo Cecchi <cosimoc src gnome org>]

commit a598148fde3f08ad69115b96c5a9a821ac16983c
Author: Timothy Arceri <t_fridey yahoo com au>
Date:   Tue Oct 18 10:39:19 2011 -0400

    file-operations: show needed space as a secondary message
    
    When there's not enough space on the disk, show how much additional
    space is needed for the operation to complete, instead of a more obscure
    error message.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=542960

 libnautilus-private/nautilus-file-operations.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/libnautilus-private/nautilus-file-operations.c b/libnautilus-private/nautilus-file-operations.c
index ba64b3d..7db7fa7 100644
--- a/libnautilus-private/nautilus-file-operations.c
+++ b/libnautilus-private/nautilus-file-operations.c
@@ -2678,6 +2678,7 @@ verify_destination (CommonJob *job,
 	GFileInfo *info, *fsinfo;
 	GError *error;
 	guint64 free_size;
+	guint64 size_difference;
 	char *primary, *secondary, *details;
 	int response;
 	GFileType file_type;
@@ -2777,10 +2778,11 @@ verify_destination (CommonJob *job,
 							      G_FILE_ATTRIBUTE_FILESYSTEM_FREE);
 		
 		if (free_size < required_size) {
+			size_difference = required_size - free_size;
 			primary = f (_("Error while copying to \"%B\"."), dest);
-			secondary = f(_("There is not enough space on the destination. Try to remove files to make space."));
+			secondary = f (_("There is not enough space on the destination. Try to remove files to make space."));
 			
-			details = f (_("There is %S available, but %S is required."), free_size, required_size);
+			details = f (_("%S more space is required to copy to the destination."), size_difference);
 			
 			response = run_warning (job,
 						primary,