The Kagi Bang search (https://kbe.smaertness.net/) offers a wide array of operators to narrow down your search (see image). The more confusing it is to me that for a simple search (just one search term) it only matches full words; e.g. searching for 'wiki' gives some useful expected results while 'wikip' returns nothing at all. I think this is just needlessly frustrating and confusing and will lead to users thinking that some bang does not exist when in fact it does, it is just that their search term did not match any full word of it.
Less frustration when a user searches for e.g. wikipedia bangs with 'wikip' and gets zero results.
