Ian Ford asked about support for the FTP command ACCT, and I discovered it is

present in RFC959... so now (lib)curl supports it as well. --ftp-account and
CURLOPT_FTP_ACCOUNT set the account string. (The server may ask for an account
string after PASS have been sent away. The client responds with "ACCT [account
string]".) Added test case 228 and 229 to verify the functionality. Updated
the test FTP server to support ACCT somewhat.

include/curl/curl.h

@@ -882,6 +882,10 @@ typedef enum {
      commands with this */
   CINIT(SOURCE_QUOTE, OBJECTPOINT, 133),
 
+  /* zero terminated string for pass on to the FTP server when asked for
+     "account" info */
+  CINIT(FTP_ACCOUNT, OBJECTPOINT, 134),
+
   CURLOPT_LASTENTRY /* the last unused */
 } CURLoption;