Jatin Ganhotra | [email protected] | [email protected]
As developers, we come across different situations, such as:
* when we realise a previous change was incorrect, or
* when we need to cherry-pick a commit from one branch and apply it on another, or
* merge changes from one branch to another
Thanks to modern version control systems, such as Git, reverting the previous change, cherry-picking and merging are just one-command away. For any collaborative project, revert, cherry-pick and merge are essential.
Git-Examiner reports the # of reverts, # of merges and # of cherry-picks performed in a given project, given it's commit history.
In addition, Git-Examiner also inspects the commit history and also reports partial reverts and partial cherry-picks in the project.
A developer performs a git-revert
by git revert CommitID
Using the git revert CommitID command, the changes made for the CommitID
are reverted back and updates applied to all the files in the CommitID are reversed.
However, it's also possible that updates to only a subset of the files are reversed. We refer to such cases as Partial reverts, as only a subset of files were reverted. Git-Examiner reports all partial reverts along with the file names.
A developer performs a git-cherry-pick
by git cherry-pick CommitID
Using the git cherry-pick CommitID command, the changes introduced by the CommitID
are applied and a new commit is created with these changes. Note that the CommitID refers to a
change introduced on a different branch.
However, it's also possible that the same updates are applied but to only a subset of the files. We refer to such cases as Partial Cherry-picks, as only a subset of files had the same changes introduced. Git-Examiner reports all partial cherry-picks along with the file names.
There is a diff associated with every commit. The diff contains a lot of information such as # of files
changed, statistics such as # of additions/deletions for each file and actual changes to every file.
We mine this information and then identify reverts using an efficient search and comparison algorithm.
The results for some of the open-sourced projects are provided at:
Results on 54 open-source projects
The results are also provided below for a quick look.
This project was developed for CS 527 - Fall 2014 - University of Illinois at Urbana Champaign. Thanks to Darko Marinov, Lamyaa Eloussi and Milos Gligoric for providing feedback.
+----+---------------------------------------------------------+--------+--------+------+------+------+------+------+ | Results | +----+---------------------------------------------------------+--------+--------+------+------+------+------+------+ | # | ProjectName- | # | # | #RV- | #RV- | #RV- | #CP- | #CP- | | | RepoURL- | Commit | Merges | Msg | Full | Part | Full | Part | | | HEAD SHA | | | | | | | | +----+---------------------------------------------------------+--------+--------+------+------+------+------+------+ | 1 | backbone-fundamentals | 1253 | 381 | 1 | 28 | 156 | 75 | 91 | | | https://github.com/addyosmani/backbone-fundamentals.git | | | | | | | | | | 2ffeffdbc6196dd628fbf6305b8a4d609012ca4e | | | | | | | | | 2 | catalyst-runtime | 2832 | 114 | 26 | 33 | 177 | 42 | 198 | | | https://github.com/perl-catalyst/catalyst-runtime.git | | | | | | | | | | ee2c12fdbfa4662604cf07fa488b5c43c1e25b80 | | | | | | | | | 3 | jshint | 1454 | 245 | 5 | 7 | 247 | 43 | 174 | | | https://github.com/jshint/jshint.git | | | | | | | | | | a643f3fec0632249dcd78d0cf5f200d9166b587d | | | | | | | | | 4 | MLPNeuralNet | 75 | 7 | 0 | 1 | 4 | 2 | 0 | | | https://github.com/nikolaypavlov/MLPNeuralNet | | | | | | | | | | a70d51708cd235bebbb9c4ef70aaab68d5c02b49 | | | | | | | | | 5 | mojo | 8924 | 88 | 16 | 44 | 143 | 13 | 67 | | | https://github.com/kraih/mojo.git | | | | | | | | | | 24f5aafc27b0563253b3003d18b4ee3fe540b0ba | | | | | | | | | 6 | ninja | 1266 | 227 | 3 | 40 | 179 | 85 | 119 | | | https://github.com/ninjaframework/ninja.git | | | | | | | | | | c6c87f85bceadb1af8234d2478971bbc890913c6 | | | | | | | | | 7 | sails | 4623 | 610 | 14 | 27 | 1132 | 163 | 962 | | | https://github.com/balderdashy/sails.git | | | | | | | | | | d433e3f39393fa15290f563385e1242317739578 | | | | | | | | | 8 | sinatra | 2648 | 441 | 21 | 44 | 352 | 175 | 151 | | | https://github.com/sinatra/sinatra.git | | | | | | | | | | eb1acf2d8ecb365508f5d570c46893b2e97a460c | | | | | | | | | 9 | stylus | 3613 | 481 | 9 | 14 | 242 | 295 | 923 | | | https://github.com/LearnBoost/stylus.git | | | | | | | | | | 7bf5cae588c2d27154356909e3f58170de7e8a42 | | | | | | | | | 10 | MapDB | 1079 | 41 | 6 | 9 | 34 | 17 | 13 | | | https://github.com/jankotek/MapDB.git | | | | | | | | | | 1e3b272b31fbffcda393aa93f9666fac18c1dada | | | | | | | | | 11 | codebox | 1913 | 93 | 4 | 6 | 67 | 10 | 38 | | | https://github.com/CodeboxIDE/codebox.git | | | | | | | | | | 8d1a79c07ea28626718e0c3a58a9fc3cc539a01c | | | | | | | | | 12 | flockdb | 739 | 92 | 3 | 4 | 44 | 11 | 15 | | | https://github.com/twitter/flockdb.git | | | | | | | | | | 3e35184203117eee28f7c0c147057cdea8969e5c | | | | | | | | | 13 | lime | 858 | 156 | 3 | 7 | 104 | 27 | 56 | | | https://github.com/limetext/lime.git | | | | | | | | | | 414943ddb105812b29e331af4ecb5c1422816d77 | | | | | | | | | 14 | neovim | 2237 | 327 | 6 | 9 | 141 | 36 | 68 | | | https://github.com/neovim/neovim.git | | | | | | | | | | 68fcd8b696dae33897303c9f8265629a31afbf17 | | | | | | | | | 15 | pouchdb | 2367 | 281 | 24 | 27 | 199 | 23 | 149 | | | https://github.com/pouchdb/pouchdb.git | | | | | | | | | | 02a37eca0741cd6b6eba8f19c608166f656b90f3 | | | | | | | | | 16 | redis | 4721 | 336 | 24 | 32 | 302 | 98 | 128 | | | https://github.com/antirez/redis.git | | | | | | | | | | e039791e394fef936bf3582de80344e2eebf587b | | | | | | | | | 17 | sharelatex | 136 | 15 | 1 | 3 | 5 | 3 | 4 | | | https://github.com/sharelatex/sharelatex.git | | | | | | | | | | a4e5a5b713185b8d14122b6c1054cedeae0be33c | | | | | | | | | 18 | slap | 296 | 0 | 0 | 0 | 0 | 1 | 0 | | | https://github.com/slap-editor/slap.git | | | | | | | | | | 4fc4ba2dff6f2422c11407b35c653fcc2813a26f | | | | | | | | | 19 | textmate | 3262 | 4 | 21 | 13 | 11 | 1 | 2 | | | https://github.com/textmate/textmate.git | | | | | | | | | | 334b869639541501bdd87c4dac07d173adc7190b | | | | | | | | | 20 | zed | 1100 | 186 | 7 | 11 | 151 | 39 | 105 | | | https://github.com/zedapp/zed.git | | | | | | | | | | 2ef64f70d71aa8e377d2b843605700f77d973bd5 | | | | | | | | | 21 | couchdb | 5599 | 187 | 53 | 38 | 2442 | 32 | 3097 | | | https://github.com/apache/couchdb.git | | | | | | | | | | 126ec7682020ad3c08966e4aef03ce02e9b14f7f | | | | | | | | | 22 | orientdb | 6773 | 893 | 50 | 59 | 1020 | 234 | 602 | | | https://github.com/orientechnologies/orientdb.git | | | | | | | | | | 0faf3c9c27febb4ed3469bec4fa309ca9e068f4b | | | | | | | | | 23 | vim.js | 198 | 15 | 0 | 0 | 22 | 2 | 16 | | | https://github.com/coolwanglu/vim.js.git | | | | | | | | | | 45a2c231b1b38a34760b58ec2f0e20425605b5bd | | | | | | | | | 24 | moloch | 431 | 15 | 0 | 0 | 7 | 4 | 2 | | | https://github.com/aol/moloch.git | | | | | | | | | | 70dd5aa6181fb096be644c0dcc1e0103cbc02677 | | | | | | | | | 25 | ossec-hids | 3499 | 399 | 8 | 35 | 277 | 57 | 261 | | | https://github.com/ossec/ossec-hids.git | | | | | | | | | | db0197df7a577d6d1b7b4fc34ce771d56a268e4e | | | | | | | | | 26 | cuckoo | 2839 | 327 | 39 | 33 | 325 | 80 | 149 | | | https://github.com/cuckoobox/cuckoo.git | | | | | | | | | | 9a34ecb6943c229bc75850ed29bdf329c78ad746 | | | | | | | | | 27 | brakeman | 2103 | 385 | 4 | 14 | 196 | 62 | 139 | | | https://github.com/presidentbeef/brakeman.git | | | | | | | | | | 36cdce51d31f89d137bd891f4f082d8abeebded5 | | | | | | | | | 28 | sleuthkit | 3291 | 836 | 14 | 33 | 1068 | 133 | 1071 | | | https://github.com/sleuthkit/sleuthkit.git | | | | | | | | | | f64f3836b13786e8a0cc4454e765517f1d1799c4 | | | | | | | | | 29 | mig | 623 | 29 | 2 | 3 | 21 | 6 | 7 | | | https://github.com/mozilla/mig.git | | | | | | | | | | 045db2cad71b09b1ea694e3aafb1f2f80b780ae4 | | | | | | | | | 30 | MozDef | 635 | 100 | 3 | 6 | 95 | 18 | 59 | | | https://github.com/jeffbryner/MozDef.git | | | | | | | | | | 08805587a9d4e64a30808ea5c16254e273003881 | | | | | | | | | 31 | hoosegow | 197 | 36 | 0 | 2 | 19 | 1 | 19 | | | https://github.com/github/hoosegow.git | | | | | | | | | | 5a4994c3748cbd242ba796e8d88004e042d3e18a | | | | | | | | | 32 | backbone | 2719 | 732 | 34 | 55 | 544 | 177 | 303 | | | https://github.com/jashkenas/backbone.git | | | | | | | | | | 84db2ba31ce92bba95df90eb3bead5cd4cbcc579 | | | | | | | | | 33 | ember.js | 7943 | 2621 | 65 | 103 | 1363 | 461 | 924 | | | https://github.com/emberjs/ember.js.git | | | | | | | | | | 984093e35de29c2e4f409543885257e91da71ef1 | | | | | | | | | 34 | knockout | 1292 | 251 | 9 | 4 | 166 | 34 | 112 | | | https://github.com/knockout/knockout.git | | | | | | | | | | 624ddacd5a879ef5bf555d89e648f982a6bd6a4e | | | | | | | | | 35 | todomvc | 2013 | 464 | 10 | 15 | 368 | 55 | 331 | | | https://github.com/tastejs/todomvc.git | | | | | | | | | | 83d21c671af8ca5fff1d42b5f5ae600539386cd8 | | | | | | | | | 36 | spine | 830 | 163 | 8 | 10 | 92 | 30 | 36 | | | https://github.com/spine/spine.git | | | | | | | | | | b7fd062637d8fbf4abc28b8dad693dfb13c85f52 | | | | | | | | | 37 | polymer | 1673 | 144 | 7 | 7 | 255 | 36 | 118 | | | https://github.com/Polymer/polymer.git | | | | | | | | | | 2d000d10fec1b2415fa4edabfed2b8641264deee | | | | | | | | | 38 | brick | 683 | 93 | 1 | 2 | 55 | 14 | 35 | | | https://github.com/mozbrick/brick.git | | | | | | | | | | 4cf4100085e736805f5f57b6f09da0e724cd4099 | | | | | | | | | 39 | rubocop | 2940 | 693 | 11 | 27 | 188 | 79 | 100 | | | https://github.com/bbatsov/rubocop.git | | | | | | | | | | 7a6dc7f786c94581b2e9adbfd7ca54ccde46b279 | | | | | | | | | 40 | hlint | 1832 | 30 | 0 | 13 | 21 | 13 | 10 | | | https://github.com/ndmitchell/hlint.git | | | | | | | | | | d5981719bdf4cce52a711d70157ad4f8b3e8e066 | | | | | | | | | 41 | coffeelint | 676 | 101 | 4 | 7 | 57 | 21 | 29 | | | https://github.com/clutchski/coffeelint.git | | | | | | | | | | ea87b4c714cb64c3a04312c24bf5e8e424f45afd | | | | | | | | | 42 | csslint | 502 | 103 | 3 | 6 | 62 | 19 | 36 | | | https://github.com/CSSLint/csslint.git | | | | | | | | | | c59f2e50aa8e50fae487365321d326f5830436dd | | | | | | | | | 43 | scss-lint | 582 | 1 | 1 | 0 | 0 | 5 | 32 | | | https://github.com/causes/scss-lint.git | | | | | | | | | | cff05b9e2213decd336574ad88a87736d859f5ca | | | | | | | | | 44 | shellcheck | 505 | 30 | 3 | 3 | 20 | 11 | 6 | | | https://github.com/koalaman/shellcheck.git | | | | | | | | | | 8bed447411106fe77817ee6de33b06b5356bd98f | | | | | | | | | 45 | puppet-lint | 708 | 101 | 0 | 2 | 45 | 18 | 22 | | | https://github.com/rodjek/puppet-lint.git | | | | | | | | | | 5a8c4524115485a1f922fa4b9f14257d9be6b7cc | | | | | | | | | 46 | eslint | 1671 | 631 | 3 | 33 | 336 | 78 | 231 | | | https://github.com/eslint/eslint.git | | | | | | | | | | d397bbd893ed08b447409ea14ff9319261a7400b | | | | | | | | | 47 | oclint | 727 | 98 | 1 | 2 | 98 | 6 | 86 | | | https://github.com/oclint/oclint.git | | | | | | | | | | 2d866b4f417479901ce90a17eeaa80417c970f71 | | | | | | | | | 48 | toaruos | 1854 | 30 | 3 | 3 | 144 | 15 | 160 | | | https://github.com/klange/toaruos.git | | | | | | | | | | 9f34619078f92bd7d9815c541a3a01ff9a86d9d1 | | | | | | | | | 49 | phaser | 696 | 113 | 0 | 4 | 86 | 45 | 48 | | | https://github.com/photonstorm/phaser.git | | | | | | | | | | 53caac2008962ac1ac3b8d46c6e38b776985acd7 | | | | | | | | | 50 | melonJS | 2802 | 224 | 32 | 30 | 297 | 107 | 391 | | | https://github.com/melonjs/melonJS.git | | | | | | | | | | db5fd2aad206d3ffd402cb4e43216852eaf901ca | | | | | | | | | 51 | Crafty | 1528 | 462 | 6 | 17 | 265 | 65 | 152 | | | https://github.com/craftyjs/Crafty.git | | | | | | | | | | 5508cb1bf94b5ed82688d50ce2aacbfb99b5ff72 | | | | | | | | | 52 | cocos2d-html5 | 6213 | 2873 | 6 | 100 | 1443 | 275 | 1151 | | | https://github.com/cocos2d/cocos2d-html5.git | | | | | | | | | | 167a29bec38f4b461a57476034875fe4fd3e21eb | | | | | | | | | 53 | engine | 3206 | 1026 | 4 | 23 | 487 | 53 | 133 | | | https://github.com/playcanvas/engine.git | | | | | | | | | | adc69eea0a929361cd13463d9d788b8e2d4d8e6f | | | | | | | | | 54 | panda.js | 693 | 36 | 0 | 5 | 31 | 15 | 21 | | | https://github.com/ekelokorpi/panda.js.git | | | | | | | | | | f77a876e1fe396b822412eba276a4fce0a3c6476 | | | | | | | | +----+---------------------------------------------------------+--------+--------+------+------+------+------+------+