- From: <bugzilla@jessica.w3.org>
- Date: Mon, 12 Sep 2016 13:34:51 +0000
- To: public-qt-comments@w3.org
https://www.w3.org/Bugs/Public/show_bug.cgi?id=29817
--- Comment #1 from Michael Kay <mike@saxonica.com> ---
The example is correct.
X?? does matches X occurring zero or one times, just as X? does. The difference
between the two, as explained in the text below the example, as that X? matches
the longest possible substring, while X?? matches the shortest possible.
For example, the result of
replace("AAA", "(A?)(A+)", "1=$1 2=$2")
is "1=A 2=AA"
while the result of
replace("AAA", "(A??)(A+)", "1=$1 2=$2")
is "1= 2=AAA"
Michael Kay
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Received on Monday, 12 September 2016 13:34:59 UTC