Add Diffing With Patience as a git til

README.md

@@ -7,7 +7,7 @@ variety of languages and technologies. These are things that don't really
 warrant a full blog post. These are mostly things I learn by pairing with
 smart people at [Hashrocket](http://hashrocket.com/).
 
-_440 TILs and counting..._
+_441 TILs and counting..._
 
 ---
 
@@ -100,6 +100,7 @@ _440 TILs and counting..._
 - [Clean Up Old Remote Tracking References](git/clean-up-old-remote-tracking-references.md)
 - [Delete All Untracked Files](git/delete-all-untracked-files.md)
 - [Determine The Hash Id For A Blob](git/determine-the-hash-id-for-a-blob.md)
+- [Diffing With Patience](git/diffing-with-patience.md)
 - [Dry Runs in Git](git/dry-runs-in-git.md)
 - [Excluding Files Locally](git/excluding-files-locally.md)
 - [Find The Initial Commit](git/find-the-initial-commit.md)

git/diffing-with-patience.md

@@ -0,0 +1,36 @@
+# Diffing With Patience
+
+The default diff algorithm used by Git is pretty good, but it can get
+mislead by larger, complex changesets. The result is a noisier, misaligned
+diff output.
+
+If you'd like a diff that is generally a bit cleaner and can afford a little
+slow down (you probably can), you can instead use the `patience` algorithm
+which is described as such:
+
+> Patience Diff, instead, focuses its energy on the low-frequency
+> high-content lines which serve as markers or signatures of important
+> content in the text. It is still an LCS-based diff at its core, but with
+> an important difference, as it only considers the longest common
+> subsequence of the signature lines:
+
+> Find all lines which occur exactly once on both sides, then do longest
+> common subsequence on those lines, matching them up.
+
+You can set this as the default algorithm by adding the following lines to
+your `~/.gitconfig` file:
+
+```
+[diff]
+    algorithm = patience
+```
+
+or it can be set from the command line with:
+
+```bash
+$ git config --global diff.algorithm patience
+```
+
+[source](http://bryanpendleton.blogspot.com/2010/05/patience-diff.html)
+
+h/t Josh Davey