Re: [xsl] Finding first difference between 2 text strings

>   <xsl:function name="f:mismatch2" as="xs:integer?">
>     <xsl:param name="a" as="xs:string" />
>     <xsl:param name="b" as="xs:string" />
>     <xsl:variable name="aa" 
> select="translate($a,'.+*\{}[]','&#xe001;&#xe002;&#xe003;&#xe004;&#xe005;&#xe006;&#xe007;&#xe008;')"/>
>     <xsl:variable name="bb" 
> select="translate($b,'.+*\{}[]','&#xe001;&#xe002;&#xe003;&#xe004;&#xe005;&#xe006;&#xe007;&#xe008;')"/>
>     <xsl:variable name="r" 
> select="concat('^:',replace($bb,'.','($0'),replace($bb,'.',')?'),'.*')"/>
>     <xsl:sequence  
> select="1+string-length(replace(concat(':',$aa),$r,'$1'))"/>
>   </xsl:function>
Wow, that's... very very impressive.  So you're replacing regular
expression values with placeholders in both strings, then wrapping ever
character in $bb with a regex expression, e.g., '(a)?', to finally
perform a regex replacement on $aa?  What does the leading colon
do?

Jim

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

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