How about a programming editor that just looks at the variable names you 
have and then compares them with others to see if they are similar, the 
editor could even pop up a tool tip that says "Hey are you sure you dont 
mean {variable_name}?" I am not really familiar with any editor that 
does that i am new to programming and ruby altogether but thats what i 
would look for if i was having the same issue.

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