Grettings, oh wise ones... Friar Hagbone is scratching what little hair is left on his sparse pate ....... I'm trying to craft a regex that controls the quantity of bracketed items. For example, the regex below will allow any number of lowercase letters and numbers, providing the entry doesn't begin or end with a space(s) 
/^[^ ]+[a-z0-9]+[^ ]+$/

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What I'd like to do is also specify the minimum (5) and maximum (12) number of characters allowed ...., and I tried: 
/^[^ ]+[a-z0-9]{5,12}[^ ]+$/

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But that doesn't appear to do it .... can anyone straighten me out on this one?

In reply to Regex: Specifying quantity for bracketed items by Hagbone

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