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Re: Finding first difference between 2 text strings

Subject: Re: Finding first difference between 2 text strings
From: "James A. Robinson" <jim.robinson@xxxxxxxxxxxx>
Date: Thu, 10 Sep 2009 20:37:43 -0700
Re:  Finding first difference between 2 text strings
On Thu, 10 Sep 2009 09:03:14 -0700 I wrote:

<     <xsl:sequence select="
<       if (empty($a) and empty($b))
<         then 0
<       else if ($a[1] ne $b[1])
<         then $pos
<       else
<         f:mismatch-position(remove($a, 1), remove($b, 1), $pos + 1)" />

Meanwhile I'm pondering the difference between

  else if ($a[1] ne $b[1])

and

  else if (not($a[1] eq $b[1]))

When one of $a or $b are empty... I guess I better dig up the XPath
spec and refresh my understanding of effective boolean values.

Jim

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James A. Robinson                       jim.robinson@xxxxxxxxxxxx
Stanford University HighWire Press      http://highwire.stanford.edu/
+1 650 7237294 (Work)                   +1 650 7259335 (Fax)

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