If there's stuff that's valuable, I'd prefer to see it pasted into the commit message -- far less likely for links to get broken. If it's long term valuable, i

If there's stuff that's valuable, I'd prefer to see it pasted into the commit message -- far less likely for links to get broken. If it's long term valuable, i.e. "I considered obvious, attractive alternative algorithm X but it failed horribly because of Y", I'd prefer that to go in a comment in the code instead. Far more likely to still be noticed in three years time, after the code's been run through two different auto-formatters and otherwise mangled around.