Here's the alternate: https://github.com/yeoman/generator-webapp/blob/master/app/templates/Gruntfile.js#L395-L450

I suppose I'm more familiar with larger Gruntfiles, where at least one task is long enough that it needs to be on multiple lines for readability, and therefore all of them are for consistency. IMO having a clear rule (like all arrays with more than one value have their values listed on separate lines) in any project where many people are contributing is better for long term code consistency and maintainability, but it's not a sticking point. If you'd like me to revert, say the word.