Strip Checker does two things. First it strips trailing whitespace from the current file and saves it. Then it passes the path of the current file to a user provided syntax checker.

For example. If you've got jslint installed and you'd like to run it in its default configuration for all javascript files you might write a `.check` file that looks like:

    #!/bin/bash

    if [[ $1 =~ \.js$ ]]
    then
      out=`jslint $1`
      if [[ $out == 'OK' ]]
      then
        exit
      else
        echo $out
      fi
    fi

To use a different version of jslint in a specific configuration you just need to add `.check` override in the project's folder. It might be something like:

    #!/usr/bin/env ruby

    dir = File.dirname(File.expand_path(__FILE__))

    filename = ARGV.first

    if filename =~ /\.js$/
      errors = `#{dir}/vendor/jslint/jslint.js --options-file #{dir}/config/jslint_options.js #{filename}`
      puts errors unless errors.chomp == "jslint: no errors found!"
    else
      exit(1)
    end

The way the syntax checking works is that Strip Checker looks for an executable called `.check` first in the current folder, then all the way up the parent chain. Once it finds that executable, it's run with the current path as the first and only argument. If the checker returns a non-empty string, that string is shown in a growl message with the title "Syntax Error". If the checker exits with a non-zero status, strip checker will ignore that result and try the next checker up the chain.

An example checker (this is the one I have in ~/.check) is included as `check.example`

By default, Strip Checker is bound to  ⌘S