Neither does squashing though: you still can't tell if that line was introduced or modified. I've come across "fix indentation" or "fix typo" commits where a b

Neither does squashing though: you still can't tell if that line was introduced or modified. I've come across "fix indentation" or "fix typo" commits where a bug was introduced, like someone accidentally comitted a change (maybe they were debugging something, or just accidentally modified it). For example: I'm tracing a bug where a value isn't staying cached. I find a line of code DefaultCacheAge=10 (which looks way too short) and git blame shows the last change was modifying that value from 86400. What I do next will be very different if the commit message says "fix indentation" vs "added new foobar feature" or "reduced default cache time for (reason)".