21 lines
807 B
Text
21 lines
807 B
Text
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Suppose you have a large piece of text - typically, say, a web page or
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a mail message. And now suppose you've done some kind of full-text
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search on that text for a bunch of keywords, and you want to display
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the context in which you found the keywords inside the body of the
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text.
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A simple-minded way to do that would be just to get the two words
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either side of each keyword. But hey, don't be too simple minded,
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because you've got to make sure that the list doesn't overlap. If you
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have
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the quick brown fox jumped over the lazy dog
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and you extract two words either side of ``fox'', ``jumped'' and
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``dog'', you really don't want to end up with
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quick brown fox jumped over brown fox jumped over the the lazy dog
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so you need a small amount of smarts. This module has a small amount
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of smarts.
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