From 9d7a837add968948a0d86a5c2e08d47871ac9871 Mon Sep 17 00:00:00 2001
From: Gianluca Casati <fibo@users.noreply.github.com>
Date: Fri, 26 Aug 2016 13:41:30 +0200
Subject: [PATCH] added alias: git undo (#123)

Credits to [Enrico Campidoglio](http://megakemp.com/about/),
see [original article](http://megakemp.com/2016/08/25/git-undo/).
---
 README.md | 6 ++++++
 tips.json | 3 +++
 2 files changed, 9 insertions(+)

diff --git a/README.md b/README.md
index 95bdcac..fd0f084 100644
--- a/README.md
+++ b/README.md
@@ -138,6 +138,7 @@ P.S: All these commands are tested on `git version 2.7.4 (Apple Git-66)`.
 * [Show how many lines does an author contribute](#show-how-many-lines-does-an-author-contribute)
 * [Revert: Reverting an entire merge](#revert-reverting-an-entire-merge)
 * [Number of commits in a branch](#number-of-commits-in-a-branch)
+* [Alias: git undo](#alias-git-undo)
 
 <!-- Don’t remove or change the comment below – that can break automatic updates. More info at <http://npm.im/doxie.inject>. -->
 <!-- @doxie.inject end toc -->
@@ -942,5 +943,10 @@ git revert -m 1 <commit-ish>
 git rev-list --count <branch-name>
 ```
 
+## Alias: git undo
+```sh
+git config --global alias.undo '!f() { git reset --hard $(git rev-parse --abbrev-ref HEAD)@{${1-1}}; }; f'
+```
+
 <!-- Don’t remove or change the comment below – that can break automatic updates. More info at <http://npm.im/doxie.inject>. -->
 <!-- @doxie.inject end -->
diff --git a/tips.json b/tips.json
index 0c35cd8..4aff636 100644
--- a/tips.json
+++ b/tips.json
@@ -403,4 +403,7 @@
 },{
     "title": "Number of commits in a branch",
     "tip": "git rev-list --count <branch-name>"
+},{
+    "title": "Alias: git undo",
+    "tip": "git config --global alias.undo '!f() { git reset --hard $(git rev-parse --abbrev-ref HEAD)@{${1-1}}; }; f'"
 }]