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Figure A-20

{n,}

Sometimes, you will want there to be an unlimited number of occurrences. You can specify an unlimited

maximum number of occurrences by omitting the maximum-occurrence specifier inside the curly braces.

To specify at least two occurrences and an unlimited maximum, you could use the following problem

definition:

Match an uppercase

A

. If there is a match, attempt to match an uppercase

B

. If there is a match, attempt

to match an uppercase

C

. If all three uppercase characters match, attempt to match a minimum of two

occurrences and an unlimited maximum occurrence of three numeric digits.

You can express that using the following pattern:

ABC[0-9]{2,}

Figure A-21 shows the appearance in OpenOffice.org Writer. Notice that now all four numeric digits in

ABC8899

form part of the match, because the maximum occurrences that can form part of a match are

unlimited.

340

Appendix A: Simple Regular Expressions

bapp01.qxd:bapp01 10:47 340

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