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The Diff Challenge

Start with a program x. Modify it to obtain a new version y.
The goal is to have the program y output its difference with x.

In other words:

$ ./y > diff
$ patch y < diff
$ cmp x y

This repo contains a Bash script which is the program x.
The repo will automatically merge any pull-request that contains a modified version of (i.e. y) that satisfies the condition above. A successfully merged y will become the new x.


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