Re: State variable test

Shouldn't $p:position and $loop_index be the same?  We say:

"In contexts where a sequence of documents is being processed, for example,
in the test expression of a p:matching-documents, this variable returns the
position of the current document within the sequence. Numbering begins at
one."

The for-each processes a sequence.

On 5/11/07, Norman Walsh <ndw@nwalsh.com> wrote:
>
> Here's a pipeline:
>
> <p:pipeline name="pipeline" xmlns:p="http://www.w3.org/2007/03/xproc">
> <p:output port="result"/>
>
> <p:identity>
>   <p:input port="source">
>     <p:inline>
>       <doc episode="ERROR">
>         <div for-each-position="ERROR" for-each-index="ERROR"
>              viewport-position="ERROR" viewport-index="ERROR"/>
>         <div for-each-position="ERROR" for-each-index="ERROR"
>              viewport-position="ERROR" viewport-index="ERROR"/>
>       </doc>
>     </p:inline>
>     <p:inline>
>       <doc episode="ERROR">
>         <div for-each-position="ERROR" for-each-index="ERROR"
>              viewport-position="ERROR" viewport-index="ERROR"/>
>         <div for-each-position="ERROR" for-each-index="ERROR"
>              viewport-position="ERROR" viewport-index="ERROR"/>
>       </doc>
>     </p:inline>
>   </p:input>
> </p:identity>
>
> <p:for-each name="loop">
>   <p:output port="result"/>
>
>   <p:string-replace>
>     <p:option name="match" value="@episode"/>
>     <p:option name="replace" value="$p:episode"/>
>   </p:string-replace>
>
>   <p:string-replace>
>     <p:option name="match" value="@for-each-position"/>
>     <p:option name="replace" value="$p:position"/>
>   </p:string-replace>
>
>   <p:string-replace>
>     <p:option name="match" value="@for-each-index"/>
>     <p:option name="replace" value="$p:loop_index"/>
>   </p:string-replace>
>
>   <p:viewport name="viewport" match="div">
>     <p:output port="result"/>
>
>     <p:string-replace>
>       <p:option name="match" value="@viewport-position"/>
>       <p:option name="replace" value="$p:position"/>
>     </p:string-replace>
>
>     <p:string-replace>
>       <p:option name="match" value="@viewport-index"/>
>       <p:option name="replace" value="$p:viewport_index"/>
>     </p:string-replace>
>   </p:viewport>
> </p:for-each>
>
> <p:wrap>
>   <p:option name="name" value="wrapper"/>
> </p:wrap>
>
> </p:pipeline>
>
> And here's the output:
>
> <wrapper>
>   <doc episode="1127bee8b26">
>     <div for-each-index="1" for-each-position="1"
>          viewport-index="1" viewport-position="1"/>
>     <div for-each-index="1" for-each-position="1"
>          viewport-index="2" viewport-position="1"/>
>   </doc>
>   <doc episode="1127bee8b26">
>     <div for-each-index="2" for-each-position="1"
>          viewport-index="1" viewport-position="1"/>
>     <div for-each-index="2" for-each-position="1"
>          viewport-index="2" viewport-position="1"/>
>    </doc>
> </wrapper>
>
> That's the expected result, right?
>
>                                         Be seeing you,
>                                           norm
>
> --
> Norman Walsh <ndw@nwalsh.com> | Reality is what refuses to go away when
> http://nwalsh.com/            | I stop believing in it.--Philip K. Dick
>
>


-- 
--Alex Milowski
"The excellence of grammar as a guide is proportional to the paucity of the
inflexions, i.e. to the degree of analysis effected by the language
considered."

Bertrand Russell in a footnote of Principles of Mathematics