Hello everybody, I'm trying to use subcommands with the Core library. I would like to factorize several things : * A set of common arguments (to set color, verbosity and so on) * A common way to deal with these arguments * A pretty way to define subcommands using these common arguments and way to handle it. Main problem is that I can't define more arguments to my subcommand. More details in my code, which is joined. You may also find it here (Github gist, could be updated): http://j.mp/1JHlZ6S [1] Result of the compilation (corebuild cmd.byte) + ocamlfind ocamlc -c -w A-4-33-40-41-42-43-34-44 -strict-sequence -g -bin-annot -short-paths -thread -syntax camlp4o -package bin_prot.syntax -package sexplib.syntax,comparelib.syntax,fieldslib.syntax,variantslib.syntax -package core -o cmd.cmo cmd.ml File "cmd.ml", line 98, characters 5-44: Warning 48: implicit elimination of optional argument ?extend File "cmd.ml", line 49, characters 11-341: Warning 27: unused variable summary. File "cmd.ml", line 49, characters 20-341: Warning 27: unused variable args. Finished, 3 targets (0 cached) in 00:00:03. Thanks for your help Leo Links: ------ [1] http://j.mp/1JHlZ6S