Add support for phrase searching

[thetorpedodog]

Problem: Sometimes I am trying to find a post with a phrase that I remember seeing (often one of my own). However, when searching for a phrase, I find every post which contains all the words in the phrase.

Suggested solution: I would like to be able to use "quotation marks" to search for an exact phrase. For instance, the above query would match a post which says “I hate when I see straight quotation marks in printed material ”, but not match a post which says “On your marks, get set, quotation”.

Alternatives and context: I don’t have any alternatives in mind; this is a pretty standard search feature. However, this feature would be particularly useful in conjunction with other search operators, like - to exclude matches, or things like from:.

[pfrazee]

cc @whyrusleeping