better "debug" for error in command line usage #2763
Merged
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tiny bandaid...
it's sadly common to get not very helpful error messages when using ilastik from the command line.
For me this often comes back to this error message complaining about trailing file names.
It is not obvious what portion of the cmd is treated that way so now we at least give a hint on what is interpreted incorrectly.
xref: #1830