fix_headers.rb

# USE THIS SCRIPT AT YOUR OWN RISK
# Make sure your work is backed up / in version control.

# Quick and dirty script to recursively replace all 
# headers of the format ###heading with ### heading.
# (Works through all .md files in the directory, and subdirectories)

filelist = Dir.glob("**/*.md")

for filename in filelist
  text = File.read(filename)
  new_contents = text.gsub(/^(#+)(\w+)/, '\1 \2')

  File.open(filename, "w") {|file| file.puts new_contents }
end