When I do auto-list/complete and I'm presented with a list of candidates, the list gets narrowed down to whatever starts with, for example if I have:
structInstance.abc
The list narrows down to anything that starts with "abc", but sometimes I know "abc" is in the entry I want, but it doesn't start with "abc".
So having a way to get the list narrowed down to all entries that "contain" "abc" instead of just starting with "abc" would be very useful.