Indentation Standards - valontuoja/metasploit-framework GitHub Wiki

Using two-space soft tabs, and not hard tabs, is the second precept^* of the Ruby Style Guide. This convention is widely adopted by nearly all Ruby projects, including Metasploit.

This page used to have a long, boring discussion about tabs vs. spaces, and the process used to convert Metasploit to a Ruby standard tabbing scheme. That was completed in mid-October of 2013.