- use the add button to make a new preference item, give it a scope of source.actionscript
- name it whatever
- paste in the following:
{ shellVariables = ( { name = 'TM_COMMENT_START'; value = '// '; }, ); }
- that's it! got these instructions on IRC from Infininight: http://pastie.textmate.org/private/clmfldbv2sexjcd7u6qjw