Arvados

A user ran into a problem using the http://doc.arvados.org/user/tutorials/running-external-program.html.

In this portion:

"script_parameters": {
                "command": [
                    ...
                    "@RG\\tID:group_id\\tPL:illumina\\tSM:sample_id",
                    ...
                ],

The portion did not correctly escape the tab character.

The change that works is:

"script_parameters": {
                "command": [
                    ...
                    "@RG\\\tID:group_id\\\tPL:illumina\\\tSM:sample_id",
                    ...
                ],

Notice the triple slashes instead.