$NetBSD: patch-ah,v 1.2 2011/12/20 16:18:16 dholland Exp $

 - handle platforms where char is unsigned (XXX looks suspicious to me)
 - const correctness demanded by recent gcc

--- xfile.hc.orig	2011-12-20 15:13:53.000000000 +0000
+++ xfile.hc
@@ -12,10 +12,10 @@
 /*----------------------------------------------------------------------*/
 
 struct conv 
-   {char b0; 
-    char b1;
-    char b2;
-    char b3;
+   {signed char b0; 
+    signed char b1;
+    signed char b2;
+    signed char b3;
    };
 
 union conv_data
@@ -29,7 +29,7 @@ union conv_data
 /* General functions                                                    */
 /*----------------------------------------------------------------------*/
 
-bool f_exists (char file_name [])
+bool f_exists (const char file_name [])
   {FILE *f;
    bool is_error;
 
@@ -60,7 +60,7 @@ double d_get (FILE *f, bool &is_eof) 
 
   }
 
-void f_open (FILE *&f, char name [], char mode [])
+void f_open (FILE *&f, const char name [], const char mode [])
   {f = fopen (name, mode);
    check_error;
 
@@ -74,7 +74,7 @@ void f_open (FILE *&f, char name [], cha
 
   }
       
-void f_open_with_extend (FILE *&f, char name [], char mode [], int max_no)
+void f_open_with_extend (FILE *&f, const char name [], const char mode [], int max_no)
   {int  version;
    char v_name [128];
 
@@ -113,7 +113,7 @@ char *f_getline (FILE *f, char record []
    return r;
   }
 
-time_t f_date (char file_name [])
+time_t f_date (const char file_name [])
   {
   }
 /*
@@ -124,7 +124,7 @@ time_t f_date (char file_name [])
   }
 */
 
-char *f_name (char full_path [])
+char *f_name (const char full_path [])
   {static char r [1024];
    int         i;
 
@@ -136,7 +136,7 @@ char *f_name (char full_path [])
    return r;
   }
 
-char *f_path (char full_path [])
+char *f_path (const char full_path [])
   {static char r [1024];
           int  p = 0;
 
@@ -150,7 +150,7 @@ char *f_path (char full_path [])
    return r;
   }
 
-char *f_tail (char full_path [])
+char *f_tail (const char full_path [])
   {static char r [1024];
 
    if   (f_is_dir (full_path))
@@ -168,30 +168,30 @@ char *f_tail (char full_path [])
 
   }
 
-char *f_home_dir (char full_name [])
+char *f_home_dir (const char full_name [])
   {static char result [512];
 
    sprintf (result, "/home/%s", &full_name [1]);
    return result;
   }
 
-bool f_is_pattern (char f_name [])
+bool f_is_pattern (const char f_name [])
   {return (strstr (f_name, "*") != NULL);
   }
 
-bool f_is_dir (char file_name [])
+bool f_is_dir (const char file_name [])
   {return (file_name [strlen (file_name)-1] == '/' || 
            file_name [strlen (file_name)-1] == '.');
   }
 
-bool f_is_home_dir (char full_name [])
+bool f_is_home_dir (const char full_name [])
   {return full_name [0] == '~';
   }
 
-bool sel_get_name (char name      [],
+bool sel_get_name (const char name      [],
                    char f_name    [],
-                   char f_pattern [],
-                   char mode      [])
+                   const char f_pattern [],
+                   const char mode      [])
 
   {char          pat [256];
    file_selector *fsel;
@@ -260,7 +260,7 @@ bool sel_get_name (char name      [],
 
   }
 
-char *complete (char name [], char tail [])
+char *complete (const char name [], const char tail [])
   {static char r [256];
 
    strcpy (r, name);