[Zope] Catalog search problem

[paul dunbar]

I have a problem when searching my catalog.It has an index called "Author" which holds the 
name of a person who wrote a document.when i search the catalog for say "paul dunbar",i will 
get documents from authors like "paul" or "paul test" as well as paul dunbar.what i want to do 
is limit the matches to "paul dunbar".i don't know python so i need to use a dtml method.
what i have tried is to accept all the matches but before i output them on the screen,i check 
to see if the author name the user entered to search is the same as the one in the current 
item.this always fails because i am not sure how to compare the strings against one 
another.when i print both variables i.e the catalog one and the user one,the user one would be 
"paul dunbar" but the catalog would be ['paul dunbar'] so they don't match.any help would be 
appreciated,
paul dunbar.

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