A better pre-commit hook for git.

Install the gem

$ gem install pre-commit

Use the pre-commit command to generate a stub pre-commit hook

# In your git repo
$ pre-commit install

This creates a .git/hooks/pre-commit script which will check your git config and run checks that are enabled.

These are the available checks:

• white_space
• console_log
• debugger
• pry
• tabs
• jshint
• js_lint
• closure_syntax_check
• php (Runs php -l on all staged files)
• rspec_focus (Will check if you are about to check in a :focus in a spec file)
• ruby_symbol_hashrockets (1.9 syntax. BAD :foo => "bar". GOOD foo: "bar")
• local (executes config/pre-commit.rb with list of changed files)
• merge_conflict (Will check if you are about to check in a merge conflict)
• migrations (Will make sure you check in the proper files after creating a Rails migration)
• ci (Will run the pre_commit:ci rake task and pass or fail accordingly)
• rubocop (Check ruby code style using the rubocop gem. Rubocop must be installed)

To configure which checks you would like to run, simply set the pre-commit.checks git configuration setting.

To enable white_space and tab checks:

# From your git repo
$ git config "pre-commit.checks" "white_space, tabs"

To enable white_space, console_log and debugger checks:

# From your git repo
$ git config "pre-commit.checks" "white_space, console_log, debugger"

Note: If no checks are configured, a default set of checks is run:

white_space, console_log, debugger, pry, tabs, jshint, migrations, merge_conflict, local

For the rubocop check, you can tell it what config file to use by setting a path relative to the repo:

# From your git repo
$ git config "pre-commit.rubocop.config" "config/rubocop.yml"