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If we wanted to match a single character, our pattern would be /a./. The control character is a '.' after the letter in question. No! /a./ means match two characters, an 'a' followed by any other character. To match a single lower-case 'a', the pattern is simply /a/ - try it and see:
Also, in your last paragraph, you've inverted your square brackets and slashes... Update: To clarify, the dot (period) is not a 'control character', as you seem to imagine, but a 'wildcard character'. To quote from perlretut (which I highly recommend you read, and include in your list of other sources): The period '.' matches any character but "\n"Update2: s/perlreftut/perlretut, sorry! In reply to Re: RFC - Regular Expressions Tutorial, the Basics (for BEGINNERS)
by Not_a_Number
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