For most changes I want more context than -c provides, because I see that your change is syntactically correct, but semantically, was your change from < to <= a

For most changes I want more context than -c provides, because I see that your change is syntactically correct, but semantically, was your change from < to <= appropriate? I need to see the definition of the things you're comparing to. Often -c is enough, but not always. I don't believe you can make a hard and fast rule. I think all you can really do is have a diff that allows you to 'jump to definition' or 'list callers', just like you can when looking at the code itself.