jcdickinson / difflib

Easy diffs in C#

Hey!

You can call me Jono. My pronous are "he / him / his". I generally contribute to projects where I'm experiencing papercuts, it's a great way to experience a wide range of different approaches to creating great software. I'm always excited to be wrong, and overjoyed to delete my own code.

I work for a really great company called Capital Markets Gateway, who are just a great bunch of peers and leaders. I'm the jack of all trades at the virtual office, but I'm mostly focusing on streamlining our CI right now. At work you'll find me using C#, JS, and a little Rust.

I'm currently working on these:

• Nickelpack: A Nix-like that aims to address some shortcomings I've seen in Nix. https://github.com/nickelpack/npk
• Termkit: A VT100-502 library that attempts to "assume nothing" about the terminal. https://codeberg.org/jcdickinson/termkit

Have an awesome day!

difflib's Issues

Licence grant

Hi I was wondering if I could have a licence grant to include your differ in my JsonDiffPatch library? I'd like to use it to diff arrays, and I may modify it..

My project is MIT licenced and not having some of the code under a difference licence would be a big help.

Missing diff instruction at beginning of sequences

Unless I'm using your library incorrectly It looks like the Differencer.FindDifferences method is not reporting inserts at the beginning of a sequence. Most likely it's not reporting removes either but I didn't test for that.

Using the following code:

List<string> olderList = new List<string>(new string[] {
    "public  class MyException extends Exception {",
    "",
    "}"
});
List<string> newerList = new List<string>(new string[] {
    "/**",
    " * Simple exception.",
    " */",
    "public  class MyException extends Exception {",
    "",
    "}"
});
DiffLib.PatienceSequenceMatcher<string> matcher = new DiffLib.PatienceSequenceMatcher<string>();
DiffLib.Differencer<string> differencer = new DiffLib.Differencer<string>(matcher);
IEnumerable<DiffLib.DifferenceInstruction> diffs = differencer.FindDifferences(
    olderList, 
    newerList);

I'm expecting the diffs collection to have the following results:
{+ (0, 0 -> 2)}
{= (0 -> 2, 3 -> 5)}

However the actual results are:
{= (0 -> 2, 3 -> 5)}