If a command runs a subcommand (e.g. "project" will run "status") it shows both in the history. If you add the hidden flag a la: instruction.commandLine.executeCommand('status', true /*hidden*/); all output is hidden, when in fact you want to attach the output from the subcommand to the main command.
ACETRANSITION The Skywriter project has merged with Ajax.org's Ace project (the full server part of which is their Cloud9 IDE project). Background on the change is here: http://mozillalabs.com/skywriter/2011/01/18/mozilla-skywriter-has-been-merged-into-ace/ The bugs in the Skywriter product are not necessarily relevant for Ace and quite a bit of code has changed. For that reason, I'm closing all of these bugs. Problems that you have with Ace should be filed in the Ace issue tracker at GitHub: https://github.com/ajaxorg/ace/issues