Use _tolower instead of tolower if possible.

diff --git a/argp/argp-help.c b/argp/argp-help.c
index a3a1a12..d78060d 100644 (file)
--- a/argp/argp-help.c
+++ b/argp/argp-help.c
@@ -1,5 +1,5 @@
 /* Hierarchial argument parsing help output
-   Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
@@ -759,7 +759,11 @@ hol_entry_cmp (const struct hol_entry *entry1,
        {
          char first1 = short1 ? short1 : long1 ? *long1 : 0;
          char first2 = short2 ? short2 : long2 ? *long2 : 0;
+#ifdef _tolower
+         int lower_cmp = _tolower (first1) - _tolower (first2);
+#else
          int lower_cmp = tolower (first1) - tolower (first2);
+#endif
          /* Compare ignoring case, except when the options are both the
             same letter, in which case lower-case always comes first.  */
          return lower_cmp ? lower_cmp : first2 - first1;