At 05:43 PM 10/1/2009, you wrote:
>I think you probably want 
>"ancestor::ipb/figure/subfig/graphic/@boardno=$sht_num" as a 
>positive test -- this will be true if there is a match (there exists 
>a graphic/@boardno in that place whose value is $sht_num).

I inherited this stylesheet. After working on this some last night 
and today, and looking at this answer, I'm not sure why there is this 
convoluted code. If there is a match on the $sht_num it means I have 
the value. So I think I can eliminate this test completely and just 
use the value.

This path was actually used to find a file path with 
unparsed_entity_uri, this was failing because it was getting an empty 
string. So I was trying to catch the error before it got to this function.


>Your second attempt can be true only if $sht_num is "", and never 
>otherwise. (It will also fail if no graphic elements are found on that path.)


So that last statement is what I was trying to test for. What is the 
result of a miss match? Is there a way to test for the results of a 
match that don't return a result? My two attempts were unable to trap 
the result of the test and do anything with it. Is there something 
else I should have tried?


---------------------------------------------------------------------------
Danny Vint

Panoramic Photography
http://www.dvint.com

voice: 502-749-6179
     


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