#!/usr/bin/env ruby

require 'open3'

# We don't want to include the literal conflict marker here, or we'll match the
# script itself!
conflict_marker = '<' * 5

# Search for checked-in files containing conflict markers
# -l    List only matching files
# -I    Ignore binary files
_, stdout, _, wait_thr = Open3.popen3("git", "grep", "-Il", conflict_marker)
exit_code = wait_thr.value.exitstatus

if exit_code.zero?
  puts "The following files appear to contain merge conflicts:"
  puts stdout.gets(nil)
end