In a YAML configuration file
Behavior correct for this:
However, if I add a space in the "columns" list:
I end up with the following exception:
This can be very confusing, especially if (by any chance) you have a line return just on the space in the command line: you never see the space in the exception message.
It seems that YAML allows spaces in lists (http://en.wikipedia.org/wiki/YAML#Lists), but this line doesn't seem to be a YAML list. If it is parsed by Doctrine (split on ","), spaces should be ignored (or trimmed).