(Well, I didn't overcome my laziness directly. I just switched from being lazy and not setting up vim and Emacs with the integrations, to trying out vscode where this was trivial or already built in.)
It depends, for some languages 'jump to definition' tools ask the same compiler/interpreter that you use to build your code, so it's as accurate as it gets, and it's not 'best effort'.
It also depends a bit on your project, some project are more prone to re-using names or symbols.
> If I was as quick at opening and reading files as claude code, I'd prefer grep with context around the searched term.
Well, Claude probably also doesn't want to have to 'learn' how to use all kinds of different tools for different languages and eco-systems.
I believe that was my experience with IDEs too?
I use both grep and JTD fairly frequently for different use cases.
I meant 'Jump to Definition' as one clear example, not as a definitive enumeration of everything that compiler integration can help you with.
Eg compiler integration is also really useful to show you the inferred types. Even dinosaurs like old-school Java and C have (limited) type inference: inside of expressions. But of course in a language like Haskell or Rust (or even Python) this becomes much more important.