Flay analyzes code for structural similarities. Differences in literal values, variable, class, method names, whitespace, programming style, braces vs do/end, etc are all ignored. Making this totally rad.

Features/Problems:

• Reports differences at any level of code.

• Adds a score multiplier to identical nodes.

• Differences in literal values, variable, class, and method names are ignored.

• Differences in whitespace, programming style, braces vs do/end, etc are ignored.

• Works across files.

  • Add the flay-persistent plugin to work across large/many projects.

• Run –diff to see an N-way diff of the code.

• Provides conservative (default) and –liberal pruning options.

• Provides –fuzzy duplication detection.

• Language independent: Plugin system allows other languages to be flayed.

  • Ships with .rb and .erb.

  • javascript and others will be available separately.

• Includes FlayTask for Rakefiles.

• Uses path_expander, so you can use:

  • dir_arg – expand a directory automatically

  • @file_of_args – persist arguments in a file

  • -path_to_subtract – ignore intersecting subsets of files/directories

• Skips files matched via patterns in .flayignore (subset format of .gitignore).

• Totally rad.