cet-is » art

Consider the configuration:

# mixed_modules.fcl

physics: {
  producers: {
    p: {...}
  }
  analyzers: {
    a: {...}
  }
  tp1: [p]
  tp2: [p, a]
}

where producer 'p' and analyzer 'a' have been illegally specified in the same path 'tp2'. Instead of receiving an exception like:

---- Configuration BEGIN
  Path configuration: The following were encountered while processing path configurations:
    ERROR: Entry a in path tp2 is an observer while previous entries in the same path are all modifiers.
---- Configuration END

the following warning is printed, and the job continues without incident:

$ art -c mixed_modules.fcl --prune-config
...
The following paths have not been enabled for execution and will be ignored:
  tp2
The following module label is either not assigned to any path,
or it has been assigned to ignored path(s):
'a'