From: Robert P. J. Day Date: Sun, 02 Dec 2018 11:50:47 GMT Subject: easy way to demonstrate length of colliding SHA-1 prefixes? Message-ID: as part of an upcoming git class i'm delivering, i thought it would be amusing to demonstrate the maximum length of colliding SHA-1 prefixes in a repository (in my case, i use the linux kernel git repo for most of my examples). is there a way to display the objects in the object database that clash in the longest object name SHA-1 prefix; i mean, short of manually listing all object names, running that through cut and sort and uniq and ... you get the idea. is there a cute way to do that? thanks. rday