group where text() contains a keyword - xslt-2.0

Question

I have a large text file that at some point looks like this :
<w>
<randomnode>
<pa/>
<pa>
Keyword1 sometxt1 <thing>abc</thing>: blabla
</pa>
<stuff>abc</stuff>
<pa>
just blabla
</pa>
<pa>
Keyword2 othertxt2: blabla
</pa>
<pa>
just blabla
</pa>
<pa>
just blabla
</pa>
<pa>
Keyword1 xxx: and blabla
</pa>
</randomnode>
</w>
and want to get this result:
<w>
<randomnode>
<k attr="keyword1 sometxt1">
<p>
<s>
Keyword1 sometxt1 <thing>abc</thing>:
</s>
blabla
</p>
<stuff>abc</stuff>
<p>
just blabla
</p>
</k>
<k attr="keyword1 othertxt2">
<p>
<s>
Keyword2 othertxt2:
</s>
blabla
</p>
<p>
just blabla
</p>
<p>
just blabla
</p>
</k>
<k attr="keyword1 xxx">
<p>
<s>
Keyword1 xxx:
</s>
and blabla
</p>
</k>
</randomnode>
</w>
In English: I want to go through each <pa> and group them whenever there is a keyword1 or keyword2 or keyword3 in the text() of that node.
The splitting-up for the content of the <s> on the : is done in another template and should work once I can group the <pa> correctly.
I have this so far:
<xsl:for-each-group select="$randomnode/*[normalize-space(.)!='']"
group-starting-with="pa/text()[contains(., 'keyword1')
or contains(., 'keyword2') or contains(., 'keyword3')]">
The problem ist that nothing is selected and I have a feeling it is because of text()...
Can I use group-starting-woth on text() at all? I would really like to use this and extend/correct it before I do something completly different..

Answer 1

Well I would ditch the text() completely and simply compare
<xsl:for-each-group select="$randomnode/*[normalize-space(.)!='']"
group-starting-with="pa[contains(., 'keyword1')
or contains(., 'keyword2') or contains(., 'keyword3')]">
If you want to use the text() child node selection then you need
<xsl:for-each-group select="$randomnode/*[normalize-space(.)!='']"
group-starting-with="pa[text()[contains(., 'keyword1')
or contains(., 'keyword2') or contains(., 'keyword3')]]">