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Get tips on who to ask for a code review, runs on Ruby 1.9.2 and above.

Looks like:

stefon cmd line action

This preview features my local changes in the pre-commit gem.


A name inspired by the SNL character Bill Hader played:

stefon on wikipedia

SNL Stefon always gave advice on the best places to go to in the city. Stefon the gem will do the same: he tells you who to go to for a code review (or send a PR to) based on whose code you changed most.


Add this line to your application's Gemfile:

gem 'stefon'

And then execute:

$ bundle

Or install it yourself as:

$ gem install stefon



$ stefon

To get the top 4 people to send a code review to.

You can use the -l option to change the number of people Stefon's recommendations are limited to: Execute:

$ stefon --limit 42

To get the top 42 people to ask for a code review (identical to stefon -l 42 ).

To get a detailed report of code that you changed, execute:

$ stefon --full-report

which is identical to stefon -f, to see something like:

$ stefon -f
Finished in 0.592418 seconds
Added 1 line to files written by: Cindy Sherman
Deleted 2 lines written by: Cindy Sherman
Added 1 line to files written by: Ed Ruscha
Deleted 1 line written by: Ed Ruscha
Deleted 1 file written by: Ed Ruscha
Deleted 1 line written by: Gerhard Richter
The top commiter in this repo is: Van Gogh

Todos / Comming improvements

  • use Github API to get a list of contributors for a project (and filter suggestions)
  • loading user preferences (list of users to exclude) - maybe with dotfiles instead of yml files
  • handle errors from surveryors
  • remove dependency of Grit class on Git module
  • exclude authors from
    • the grit module - file top author
    • the git module - repo top commiter


  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request

The narrative of stefon's code

Stefon lives in the shell. We ask for suggestions by interacting with the CLI (using the trollop gem for getting cmd line options), the CLI gets an Editor to write a script for Stefon. The Editor has a team of Surveyors that look for certain changes in the codebase (AddedLines, DeletedFiles, etc.). To detect these changes, the Surveyors use GitUtils (a wrapper for cmd line git interface) and GritUtils (a wrapper for another gem called grit), and store scores in a SurveyorStor, which acts like a Hash. The Editor is responsible for assembling the team, telling them how detailed of a report he needs (--full-report option) and for how many users (--limit option), and combinning their reports, so that the CLI can print it out on the screen.


(c) Artsy, 2015 + Ilya Kavalerov



A utility that recommends who to ask for a code review.




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