Git-history analysis of Yazi: does this ownership concentration match reality?

[SushantVerma7969]

Hi,

I've been experimenting with a Git-history analysis tool that tries to infer maintenance risk, ownership concentration, and bus-factor signals from commit history.

I ran it against the Yazi repository and the results were much stronger than I expected.

Some major modules showed:

yazi-parser — 99.5%
yazi-plugin — 96.4%
yazi-core — 95.5%
yazi-fm — 94.9%
yazi-config — 91.4%

The analysis also flagged Bus Factor = 1 across many important areas, suggesting that a very large portion of historical knowledge is concentrated around the same contributor.

Of course, commit history is only a proxy and doesn't necessarily reflect actual maintainership, review activity, design ownership, or who could realistically maintain a subsystem today.

That's what made me curious.

For people familiar with the project:

Do these results roughly match reality?
Are there active contributors whose expertise is not visible from commit history alone?
Which important signals would you consider missing from a history-only analysis?
If you had to estimate the "real" bus factor of Yazi, would it be significantly higher than what the history suggests?

I thought the results were interesting enough to share and I'd love to hear where this kind of analysis is useful and where it becomes misleading.

Thanks!