- Preprocessor to include file
- cat prog | ruby -pe 'gsub /{{{.+}}}/, File.open("$0").read'
- cat prog | ruby -pe '$_.gsub!(/{{{(.+?)}}}/) { File.read $1 }'
- cat prog | ruby -ne 'puts $_.gsub(/{{{(.+?)}}}/) { File.read $1 }'
- s.gsub(/{{{(.+?)}}}/) { |m| File.read($1) }