Add space inside hash literal braces
Avoid using Perl-style special variables
Never use unless with else, switch with positive case first
Do not use do…end with multi-line while
Add space inside block braces
Ensure there is a space before block braces
Ensure there is a space around operators
Ensure there is a space after commas
Only have a single space before first argument (without parentheses)
Remove semicolon, it was unnecessary
Avoid self where not required

It is only required when calling a self write accessor
Avoid return where not required for flow of control
Prefer percent literals with parentheses
Don't use parentheses around the condition of an if
Favor unless over if for negative conditions