I really like how Rust does this.

"Expected a colon here, found a <" (ascii-art pointer to the place) "did you forget to close a bracket here?" (ascii-art pointer to 12 lines above that, where, indeed you forgot to close a bracket.

It does this for semi-colons (they are not always required), closing brackets (maybe you are nesting something horrendously deep?) etceteras.

The idea, basically is "I see this is wrong. But I'm not the one to decide how to fix it for you, but here's a suggestion".

I love Rust for this.