A Ruby implementation of the Patience diff algorithm.
Patience Diff creates more readable diffs than other algorithms in some cases, particularly when much of the content has changed between the documents being compared. There's a great explanation and example here.
Patience diff was originally written by Bram Cohen and is used in the Bazaar version control system. This version is loosely based off the Python implementation in Bazaar.
$ gem install patience_diff
$ patience_diff [options] file-a file-b
--help to see available options.
left = File.read("/path/to/old").split($RS) = File.mtime("/path/to/old") right = File.read("/path/to/new").split($RS) = File.mtime("/path/to/new") differ = ::UnifiedDiffer.new(:context => 10) puts differ.diff(left, right, left_file, right_file, , )
(The MIT License)
Copyright (c) 2012 Andrew Watt
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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