> OK. So would you support an IDE that generated one individual commit per keypress? When I type "hello", that's five individual commits each changing a single letter.

Not OP but - conceptually? Yes. I've written file formats which preserve undo/redo history, for example. The caveats:

1) I don't want to inadvertently leak my password. This is an issue with things such as local bash command history buffers as well, and unreviewed autocommits in general. You could say it's too useful - to the wrong people!

2) My tooling needs to be built around a different level of granularity as the default. I'm not OK with single letter commits cluttering up my git log, for example. Having them around to drill down into if I need them? Sure.

Per-letter detail is so granular that even undo/redo systems will often squash history states together. Observing your exact typing Cadence / the extra evidence of initial authorship is niche enough that I'm quite willing to sacrifice that level of detail for the sake of performance, maintainability, or basically any and every other excuse you can think of.

> When we commit code to share it with other people, we recognize that only a certain level of detail is relevant to them. The physical sequence of letters that I pressed isn't typically relevant to someone else. Rather, the logical set of changes is what affects them.

I have never seen a codebase with perfect commits. The ones that always give me trouble wrapping my head around are the squashed "logical set of changes", where the set size is way too damn big. Reverse engineering a saner overview from a series of tiny commits is way easier.

And the physical way something was done does matter at times. I'm going to pay way more attention to "whitespace cleanup" commit done by a human than "whitespace cleanup" commit done by vetted tools, for example. In whitespace significant languages, the former may trigger a full code review. Similar concerns with a lot of refactorings, actually.

> If you agree that a single commit per letter of keypress is undesirable then you agree with me in principle.

Per the above, I can only agree with you in practice :)

> There is a finite level of detail that makes sense to share, practically, with current source control systems, and what we're arguing about is how much to share.

Agreed. But I haven't found a single, solitary codebase, where I'd ever argue "less". I can't even recall a single, solitary commit where I'd have ever argued "less". Commit directly to mainline to fix a single character typo? I'll be annoyed if your changelist description was too terse! I want to see:

Fix the build: Fix typo 'baz' -> 'bar'
Fix documentation typo: 'baz' -> 'bar'

I've seen a codebase where a majority (read literally: >50%) of the commits were "good enough". It was beautiful.

A coworker of mine shared he'd collected stats on who made the most commits/day to test a hypothesis. Due to some outliers, he'd decided against it, but thought I'd find the stats amusing. Out of ~50 people (~15 programmers), I (the most recently hired programmer) topped the chart. Second place? The build server account (thanks to nightly build scripts.) I was indeed amused.