Regular expression support for find/replace
Regex support when searching through text would be amazing. Just a small icon toggle inside of the "find" field for "interpret the search query as regex syntax" would make my work a lot easier.
Similarly, you'd then be able to use the replace feature with regex backreferences to do something like [replace text with what you searched for, plus something extra].
Replace with: $0abulous
foo -> fabulous, Foo -> Fabulous