patchbomb: includes a unique series ID in email header Now that we have patch index and series size information, having a unique series identifier will helps tool to glue all email back together without any additional logic.

color: add parenthesis to help readability Took me a multiple attempts until my mind eventually stop reading: auto = coloropt = 'auto' And properly reads: auto = colorpopt == 'auto' So we add parenthesis to clarify.