X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fbackupfile.c;h=32ffaeaa7b31473af888449615910547e2746c25;hb=718b0598a7e9f5e9bdf3efc7e91e69a78e465327;hp=449fb594197552c298ad93f26ee629908c43564b;hpb=267a39bafd249d7eb9c37df06dc6defcf41cb343;p=gnulib.git

diff --git a/lib/backupfile.c b/lib/backupfile.c
index 449fb5941..32ffaeaa7 100644
--- a/lib/backupfile.c
+++ b/lib/backupfile.c
@@ -1,7 +1,7 @@
 /* backupfile.c -- make Emacs style backup file names
 
    Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+   1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -21,7 +21,7 @@
 /* Written by Paul Eggert and David MacKenzie.
    Some algorithms adapted from GNU Emacs.  */
 
-#if HAVE_CONFIG_H
+#ifdef HAVE_CONFIG_H
 # include <config.h>
 #endif
 
@@ -38,9 +38,7 @@
 
 #include <limits.h>
 
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
+#include <unistd.h>
 
 #if HAVE_DIRENT_H
 # include <dirent.h>
@@ -334,13 +332,13 @@ find_backup_file_name (char const *file, enum backup_type backup_type)
 
 static char const * const backup_args[] =
 {
-  /* In a series of synonyms, present the most meaning full first, so
+  /* In a series of synonyms, present the most meaningful first, so
      that argmatch_valid be more readable. */
   "none", "off",
   "simple", "never",
   "existing", "nil",
   "numbered", "t",
-  0
+  NULL
 };
 
 static const enum backup_type backup_types[] =
@@ -351,6 +349,10 @@ static const enum backup_type backup_types[] =
   numbered_backups, numbered_backups
 };
 
+/* Ensure that these two vectors have the same number of elements,
+   not counting the final NULL in the first one.  */
+ARGMATCH_VERIFY (backup_args, backup_types);
+
 /* Return the type of backup specified by VERSION.
    If VERSION is NULL or the empty string, return numbered_existing_backups.
    If VERSION is invalid or ambiguous, fail with a diagnostic appropriate