- * Checks that the 'identifier' string is valid identifier string
- * and does not contain any unassigned or prohibited character. This
- * function is used to check for valid nicknames, server names,
- * usernames, hostnames, service names, algorithm names, other security
- * property names, and SILC Public Key name.
- *
- * If the 'max_allowed_length' is non-zero the identifier cannot be
- * longer than that, and NULL is returned if it is. If zero (0), no
- * length limit exist. For nicknames the max length must be 128 bytes.
- * Other identifiers has no default limit, but application may choose
-* one anyway.
- *
- * Returns the validated string, that the caller must free. Returns
- * NULL if the identifier string is not valid or contain unassigned or
- * prohibited characters. Such identifier strings must not be used
- * SILC protocol. The returned string is always in UTF-8 encoding.
- * The length of the returned string is in 'out_len'.
- *
- * NOTES
- *
- * In addition of validating the identifier string, this function
- * may map characters to other characters or remove characters from the
- * original string. This is done as defined in the SILC protocol. Error
- * is returned only if the string contains unassigned or prohibited
- * characters. The original 'identifier' is not modified at any point.
+ * Inspects the `string' for wildcards and returns regex string that can
+ * be used by the GNU regex library. A comma (`,') in the `string' means
+ * that the string is list.