# HG changeset patch
# User Henry S. Thompson <ht@markup.co.uk>
# Date 1494154550 -3600
# Node ID 5469a32795da3fef3be42e1b25cdacdf9ae3ff40
# Parent  6f448ac67778f97ae5b7cf78de2f2e5abcbd2640
fix off-by-one error

diff -r 6f448ac67778 -r 5469a32795da n2a.xsl
--- a/n2a.xsl	Tue May 02 10:20:59 2017 +0100
+++ b/n2a.xsl	Sun May 07 11:55:50 2017 +0100
@@ -8,7 +8,7 @@
   <xsl:param name="n" as="xs:integer"/>
   <xsl:sequence select="let $least := $codeBase+(($n - 1) mod 26)+1
                          return if ($n &lt; 27) then $least
-                          else (e:n2aa($n idiv 26),$least)"/>
+                          else (e:n2aa(($n - 1) idiv 26),$least)"/>
  </xsl:function>
 
  <xsl:function name="e:n2a" as="xs:string">