--libcurl does not support -F

docs/curl.1

@@ -659,6 +659,10 @@ Append this option to any ordinary curl command line, and you will get a
 libcurl-using source code written to the file that does the equivalent
 operation of what your command line operation does!
 
+NOTE: this does not properly support -F and the sending of multipart
+formposts, so in those cases the output program will be missing necessary
+calls to \fIcurl_formadd(3)\fP, and possibly more.
+
 If this option is used several times, the last given file name will be used.
 .IP "--limit-rate <speed>"
 Specify the maximum transfer rate you want curl to use. This feature is useful