While RegEx is a powerful tool and an absolutely wonderful addition to 
XSLT in version 2.0 it's not something thats really going to make the 
difference in making sample below possible... You can do it now in 1.0 
using a combination of string functions, the contain function and either 
an XML file that contains all possible ways the author may be referenced 
or a combination of variables to act in the same capacity (the former 
requiring much less code and being more inline with how XSLT was 
designed to be used in the first place... a way to match element(s) 
and/or attribute(s) patterns based on given criteria and output a given 
set of data (static or dynamic) when the pattern is found.)
Something similar to the following would work using 1.0 (this example 
uses "citation" as the current context node):
<xsl:variable name="author-variations" 
select="document('author.xml')/author/name"
<xsl:if test="contains(preceding-sibling::text()[1], 
$author-variations/text-variations)">
output this...
</xsl:if>
The author.xml file is obviously just a foo example and as such the 
element structure and name usage is just a foobar represenation of what 
it might look like...  but the concept is there and after being properly 
modified to fit your needs will give you what you want...  Of course 
RegEx will make the process of finding a pattern with unlimited 
variations within a text node mere childs play... but to accomplish what 
you are attempting is definitely not the only way to do it.
Hope this helps!
<M:D/>
Bruce D'Arcus wrote:
I'm not really that familiar with regular expressions (beyond the 
basics), nor with the specifics of their implementation in XSLT 2.0.  
How easy is it to have regexp code that can take this:
    <para>Acccording to Doe <citation><biblioref 
linkend="doe99"/></citation> ...</para>
.... and to see that while standard processing code would yield this:
    <p>According to Doe (Doe, 1999) ...</p>
.... the author name is preceding the citation, such that the output 
should be:
    <p>According to Doe (1999) ...</p>
?
Put differently, would there be a good way to look at the text 
immediately preceding a citation (probably in the entire sentence 
preceding it) to see if the author is noted there?
I should add that historically (in bibtex for example), the author 
would manually code the citation to indicate how it should be 
rendered.  I'm just wondering if that's really necessary, and perhaps 
simply awkward (for example, in a GUI app, it means requiring some 
sort of interface for the author to indicate how it ought to be 
rendered, while using the approach I'm suggesting above would be much 
simpler).
Bruce
--~------------------------------------------------------------------
XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
To unsubscribe, go to: http://lists.mulberrytech.com/xsl-list/
or e-mail: <mailto:xsl-list-unsubscribe(_at_)lists(_dot_)mulberrytech(_dot_)com>
--~--
--~------------------------------------------------------------------
XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
To unsubscribe, go to: http://lists.mulberrytech.com/xsl-list/
or e-mail: <mailto:xsl-list-unsubscribe(_at_)lists(_dot_)mulberrytech(_dot_)com>
--~--