Ability to append items to list in config file

[GoogleCodeExporter]

It would be helpful to be able to add items to a list in a configuration
file.  Something like:

optiona += itema, itemb

This would allow optiona to have a default list set by the application and
then to add items to it.  The real world example is yum and the
installonlypkgs option which is pre-populated with a large list of kernel item.

Original issue reported on code.google.com by opoplaw...@msn.com on 15 Apr 2009 at 2:58

[GoogleCodeExporter]

Checkout the config.py i yum, it has already class to handle more complex
configurations like list and it already works on top of iniparse.

Original comment by tim.lauridsen on 16 Apr 2009 at 8:51