I need to be able to identify values like '9i' or '1.4cm'. Now, I started with a simple regex of /^\s*(\d+)\s*([a-z]{1,2})\s*$/i and that was fine. Except it doesn't do decimal places.

So, I went to /^\s*([+-]?(?:\d+)?(?:\.)?(?:\d+)?)\s*([a-z][a-z]?)\s*$/i, but I know that this will give me false positives. (For example, '.c' will work match just fine.)

Thus, I put it out to the monastery.

(Oh, to make it more fun, I have to use 5.005_003. I can't use anything cool like :alpha.)

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update (broquaint): added missing </code> tag

In reply to Identifying and parsing numbers by dragonchild

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