RegExp split a string by its middle character matches

I'd like to split all the instances of a character that aren't the starting or ending character. For example: "go good golly gog".split(RegExp) would go to ["go ","ood ","olly ","o开发者_开发技巧g"].

Is this RegExp possible?

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Is this what you want?

"go good golly gog".split(/(?!^)g(?!$)/)