I have looked and tried to use exuberant ctags with no luck with what I want to do. I am on a mac trying to work in a project where I want to exclude such directories as .gi
You can encapsulate a comma separated list with curly braces to handle multiples with one --exclude option:
ctags -R --exclude={folder1,folder2,folder3}
This appears to only work for folders in the root of where you're issuing the command. Excluding nested folders requires a separate --exclude option.