in get_next_filename(), store the value of digits(ULONG_MAX) in a

static, since it doesn't change and hence doesn't need to be
recalculated


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3124 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -91,6 +91,10 @@ CVS code -
   read_file()
 	- Remove apparently unneeded logic to handle a case where
 	  current is NULL, since it shouldn't be NULL there. (DLR)
+  get_next_filename()
+	- Store the value of digits(ULONG_MAX) in a static, since it
+	  doesn't change and hence doesn't need to be recalculated.
+	  (DLR)
 - nano.c:
   do_verbatim_input()
 	- Move to text.c, since it's an advanced text-based operation.

src/files.c

@@ -628,16 +628,20 @@ int open_file(const char *filename, bool newfie, FILE **f)
  * extension exists, we return "". */
 char *get_next_filename(const char *name, const char *suffix)
 {
+    static int ulmax_digits = -1;
     unsigned long i = 0;
     char *buf;
     size_t namelen, suffixlen;
 
     assert(name != NULL && suffix != NULL);
 
+    if (ulmax_digits == -1)
+	ulmax_digits = digits(ULONG_MAX);
+
     namelen = strlen(name);
     suffixlen = strlen(suffix);
 
-    buf = charalloc(namelen + suffixlen + digits(ULONG_MAX) + 2);
+    buf = charalloc(namelen + suffixlen + ulmax_digits + 2);
     sprintf(buf, "%s%s", name, suffix);
 
     while (TRUE) {