                     # TODO: what do we want to do if a log doesn't get recorded?
                     console.log('error recording a log entry: ', err)
 
-    open_file : (opts) =>
+    open_file: (opts) =>
         opts = defaults opts,
             path               : required
             foreground         : true      # display in foreground as soon as possible

                        @redux.getActions('file_use')?.mark_file(@project_id, opts.path, 'open')

                        @log
                            event  : 'open'
                            action : 'open'
                            filename  : opts.path

                        store = @get_store()

                    timeout : 60
                    cb      : (err, group) =>
                        if err
                            @set_activity
                                id    : misc.uuid()
                                error : "opening file -- #{err}"
                            return

                        ext = misc.filename_extension_notilde(opts.path).toLowerCase()

