I'm developing a search mechanism to which the search query is provided via a text field. The query is then parsed and the results are presented to the user. I've got the syntax definition covered except for one detail.
What operator (one character, or two at the most) should the user enter to ask whether one string contains another? I've thought about tilde ('~'), but that has met some resistance from some of the other people involved.
I have a problem using a whole word (e.g. 'contains' ...) due to syntax reasons, so that's out of the question.