Regex problem

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Article #50334

#50334

From: Per Olav Heggtveit
Date: Fri, 08 Oct 1993 15:38

31 lines
1376 bytes

I have two regular expressions defined as follows:

 Regex word1("\\(h?a\\(v\\|vn\\)?\\)+"); 
 Regex word2("\\(h?a\\(v\\|vn\\)?\\)");

The first one does _not_ recognize the word "havn", but the second one do.
When I change the definition of word1 to 

 Regex word3("\\(h?a\\(v\\|mn\\)?\\)+"); 
                          ^&^^
it recognize the word "hamn" correctly, but when I change to 

 Regex word4("\\(h?a\\(m\\|mn\\)?\\)+");
                      ^^^
"hamn" is not recognized.

Could anyone give me a reasonable explanation? 

(To match the regular expressions I used the string.matches() construction ) 




Per Olav Heggtveit
-- 
Norwegian Telecom Research
P.O. Box 83
N-2007 Kjeller
Tel: (47) 63 80 93 20
e-mail: per.heggtveit@tf.tele.no

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From: poh@hal.nta.no (Per Olav Heggtveit)
Subject: Regex problem
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Date: Fri, 8 Oct 93 15:38:15 GMT
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