+char *find_str (const char [], size_t, const char *);
+char *rfind_str (const char [], size_t, const char *);
+char *nmh_strcasestr (const char *, const char *);
+
+/*
+ * See if a string contains 8 bit characters (use isascii() for the test).
+ * Arguments include:
+ *
+ * start - Pointer to start of string to test.
+ * end - End of string to test (test will stop before reaching
+ * this point). If NULL, continue until reaching '\0'.
+ *
+ * This function always stops at '\0' regardless of the value of 'end'.
+ * Returns 1 if the string contains an 8-bit character, 0 if it does not.
+ */
+int contains8bit(const char *start, const char *end);