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[Bug 28598] [FO31] (editorial) unclarity in description of negative starting position with fn:subsequence

From: <bugzilla@jessica.w3.org>
Date: Wed, 06 May 2015 18:16:47 +0000
To: public-qt-comments@w3.org
Message-ID: <bug-28598-523-Z4GW5mJONc@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=28598

--- Comment #4 from Michael Kay <mike@saxonica.com> ---
I suggest we delete notes 3, 4, and 5, and replace them with the following
sentence modelled on what appears for "substring":

The function returns a sequence comprising those items of $sourceSeq whose
index position (counting from one) is greater than or equal to the value of
$startingLoc (rounded to an integer), and (if $length is specified) less than
the sum of $startingLoc and $length (both rounded to integers). No error occurs
if $startingLoc is zero or negative, or if $startingLoc plus $length exceeds
the number of items in the sequence, or if $length is negative.

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