Useful Emacs commandsEdit
align-regexp
Mark a region like this one:
    Parser       = Wikitext::Parser.shared_parser
    parser.img_prefix.should   == original_prefix
    new_prefix               = '/totally-different-prefix/'
    parser.img_prefix             = new_prefix
    parser.img_prefix.should      == new_prefix
    parser.parse('{{bar.png}}').should == %Q{<p><img src="/totally-different-prefix/bar.png" alt="bar.png" /></p>\n}
And do M-x align-regexp followed by = to turn it into this:
    Parser                             = Wikitext::Parser.shared_parser
    parser.img_prefix.should           == original_prefix
    new_prefix                         = '/totally-different-prefix/'
    parser.img_prefix                  = new_prefix
    parser.img_prefix.should           == new_prefix
    parser.parse('{{bar.png}}').should == %Q{<p><img src="/totally-different-prefix/bar.png" alt="bar.png" /></p>\n}